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USS Heermann
USS Heermann
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USS Heermann in an undated wartime photo
History
United States
NameUSS Heermann
NamesakeLewis Heermann
BuilderBethlehem Shipbuilding Corporation, San Francisco, California
Laid down8 May 1942
Launched5 December 1942
Sponsored byMrs. Edward B. Briggs
Commissioned6 July 1943 to 12 June 1946
Recommissioned12 September 1951
Decommissioned20 December 1957
Stricken1 September 1975
IdentificationDD-532
FateTransferred to Argentina, 14 August 1961.
Argentina
NameAlmirante Brown
Acquired14 August 1961
Decommissioned1982
Stricken1982
IdentificationD 20
FateScrapped 1982
General characteristics as built
Class & typeFletcher-class destroyer
Displacement
  • 2,325 long tons (2,362 t) standard
  • 2,942 long tons (2,989 t) full load
Length
  • 376 ft 5 in (114.7 m) oa
  • 369 ft 1 in (112.5 m) wl
Beam39 ft 7 in (12.1 m)
Draft13 ft 9 in (4.19 m) full load
Propulsion
Speed38 knots (70 km/h; 44 mph)
Range6,500 nmi (12,000 km; 7,500 mi) at 15 knots (28 km/h; 17 mph)
Complement273
Armament
Armor
  • Side: 0.75 in (1.9 cm)
  • Deck: 0.5 in (1.3 cm)
Service record
Part ofUnited States Pacific Fleet
OperationsOperation Galvanic, Landing on Emirau, Mariana and Palau Islands campaign, Philippines campaign, Battle off Samar, Okinawa campaign, Battle of Iwo Jima
Awards

USS Heermann (DD-532) was a World War II-era Fletcher-class destroyer in the service of the United States Navy. The ship entered service in 1943 and took part in several battles during World War II in the Pacific theatre of operations, including the Philippines campaign, Battle off Samar and the Battle of Iwo Jima among others. Heermann gained fame during the "last stand of the Tin Can Sailors" in which she and several other destroyers of Task Unit 77.4.3 ("Taffy 3") engaged a far superior Japanese task force during the Battle off Samar in October 1944. Heermann was the only American destroyer of "Taffy 3" to survive the engagement. Following the end of the war in 1945, the ship was placed in reserve from 1946 to 1951, when the destroyer was reactivated. Heermann remained in active service until 1957, when the ship was returned to the reserve. In 1961, Heerman was loaned to Argentina and was renamed ARA Almirante Brown (D-20) while in service with the Argentinian Navy. Almirante Brown remained in Argentinian service until 1982, when the ship was decommissioned.

Namesake

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Lewis Heermann was born on 3 August 1779 in Kassel, Germany. He was commissioned as a Surgeon's Mate in the United States Navy on 8 February 1802. On 16 February 1804, during the First Barbary War, Lieutenant Stephen Decatur left Heermann in command of the bomb ketch USS Intrepid while he led a group of American seamen to board the captured frigate USS Philadelphia in Tripoli Harbor and set the frigate ablaze.

When hostilities with the Barbary States closed in 1805, Heermann returned to the United States but soon took leave of absence to study in Europe until 1808 when he returned to active duty in Norfolk, Virginia. Largely due to his pleas for better medical care for the men of the Navy, Congress passed a bill authorizing the construction of hospitals at several naval stations, but the first official U.S. Naval Hospitals were not actually built until after Dr. Heermann's death.

He was transferred to New Orleans, Louisiana in August 1811; and, with the exception of a year in the North for his health and an assignment in 1830 in the Mediterranean where he served for an unknown time as Fleet Surgeon of the Mediterranean Squadron, he remained there until he died in May 1833.

Description and design

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The Fletcher-class design departed from US destroyer design, having a larger displacement than previous classes and more extensive armament. The flush deck added to the strength, but the number of systems aboard the ship led to a cramped design. Heermann was among the Fletcher-class ships that got a new bridge design. The standard Fletcher-class ship had a standard displacement of 2,325 long tons (2,362 t) and was 2,942 long tons (2,989 t) at full load. The destroyers were 376 ft 5 in (114.7 m) long overall and 369 ft 1 in (112.5 m) long at the waterline with a beam of 39 ft 7 in (12.1 m) and a draft of 13 ft 9 in (4.19 m) at full load.[1]

The Fletcher class were powered by steam from four Babcock & Wilcox boilers driving two General Electric turbines turning two shafts rated at 60,000 shaft horsepower (45,000 kW). The destroyers carried 492 long tons (500 t) of fuel oil. The ships had a maximum speed of 38 knots (70 km/h; 44 mph) and a range of 6,500 nautical miles (12,000 km; 7,500 mi) at 15 knots (28 km/h; 17 mph). The ships had a complement of 273 officers and enlisted personnel.[1]

The class were initially armed with five 5-inch (127 mm)/38 caliber guns in Mk30 dual-purpose turrets for anti-aircraft and surface warfare, aligned along the centreline. Ten 21-inch (533 mm) torpedo tubes were also equipped. Four single-mounted 1.1-inch (27.9 mm) guns and four 20 mm cannon were equipped for anti-aircraft (AA) defense. For anti-submarine defense, six depth charge throwers and two depth charge racks were installed. Later, three twin-mounted 40 mm guns and the number of 20 mm cannon increased to eleven on Heermann. This would later change again to five twin 40 mm gun mounts and seven 20 mm cannon. The destroyers also had some armor, with 0.75-inch (19 mm) side armor and 0.5-inch (13 mm) armor on the decks over the machinery.[1]

Service history

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Heermann was launched on 5 December 1942 by the Bethlehem Shipbuilding Co. of San Francisco, California and sponsored by Mrs. Edward B. Briggs, wife of Lieutenant E. B. Briggs, USCGR, great-grandson of the namesake. The destroyer was commissioned on 6 July 1943.[2]

After shakedown training out of San Diego, California, Heermann joined the 5th Fleet on 21 October 1943 for Operation Galvanic, the assault on the Gilbert Islands. She arrived off Tarawa in Rear Admiral Harry W. Hill's Southern Attack Force on 20 November. Her guns sank a small enemy craft inside the lagoon and the next two days assisted troops ashore with close-in fire support. With the island secured, she returned to Pearl Harbor for repairs and training which ended on 23 January when she sailed in the screen of an attack transport reserve force. After the American assault on Kwajalein on 31 January Heermann spent two weeks patrolling off the island and operated in the screen of escort carriers which were launching strikes in support of troops ashore, followed up by a visit to Eniwetok Atoll and then bombardment duties of Japan and Parry Island. Following the invasion, the destroyer performed fire support and patrol operations off the atoll during mop-up operations.[2]

Heermann was then assigned to the Third Fleet and Task Force 39 on 18 March 1944 after stopping at Majuro Lagoon and then Port Purvis on Florida Island, in the Solomons. For the next month the destroyer escorted convoys which were occupying Emirau Island and seeking out enemy supply barges along the coast of New Hanover. Following a stop at Purvis on 3 June, Heermann took part in the bombardment of a tank farm on Fangelawa Bay, New Ireland on 11 June, and then performed ASW patrols from the Solomons towards the Admiralty, Caroline, and Marshall islands until 26 June. In mid-1944, Heermann escorted merchant shipping from Espiritu Santo, New Hebrides and Nouméa, New Caledonia. The destroyer returned to Port Purvis and departed on 6 September 1944 with Rear Admiral William Sample's escort carrier force, providing escort during the invasion of the Palau Islands. Following this, the destroyer was detached for operations in the Philippine Islands.[2]

Battle off Samar: October 1944

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Heermann screened transports and landing ships to the beaches of Leyte under the command of recently promoted Commander Amos T. Hathaway, then joined Rear Admiral Thomas L. Sprague's Escort Carrier Group (Task Group 77.4) which was made up of three escort carrier task units, known as the "Three Taffies" because of their voice calls: "Taffy 1", "Taffy 2", and "Taffy 3". Destroyers Hoel and Johnston joined her in screening Rear Admiral Clifton Sprague's unit, "Taffy 3" which also included his flagship Fanshaw Bay and five other escort carriers.[2]

On 25 October 1944 found the task group east of Samar steaming north as the Northern Air Support Group. At 06:45 lookouts observed anti-aircraft fire to the north and within three minutes, were under heavy fire from Japanese Admiral Takeo Kurita's Center Force of four battleships, six heavy cruisers, two light cruisers, and 11 destroyers. In an effort to withdraw away to the south from Kurita's force, the escorts began to make smoke screens to mask the movement of the larger ships. Heermann, on the opposite side of the carriers from the Japanese force at the opening of the battle, steamed into the action at flank speed through the escort carriers which, after launching their planes, formed a rough circle as they made for Leyte Gulf. Smoke and intermittent rain squalls reduced visibility to less than 100 yards (91 m) which led to near collisions, with Heermann forced to avoid the destroyer escort Samuel B. Roberts and destroyer Hoel.[2]

As the escorts began torpedo runs at the Japanese force, Heermann began firing her 5-inch guns at one heavy cruiser, Chikuma, while directing torpedoes at Haguro. Heermann then changed course to engage a column of four battleships whose shells began falling around the destroyer. Heermann targeted Kongō, the column's leader, at which the destroyer launched three torpedoes. Then Heermann switched targets to Haruna, and fired three torpedoes, which were launched from only 4,400 yards (4,000 m). The destroyer retreated after believing one of the torpedoes had struck a target. Japanese records claim that the battleship successfully evaded all of the torpedoes from Heermann, but they were slowed in their pursuit of the American carriers. The battleship Yamato was forced out of the action altogether after reversing course when caught between two spreads.[2]

Heermann laid another smoke screen along the starboard quarter of the carrier formation and then returned to engage the Japanese force of four heavy cruisers. Here the destroyer dueled with Chikuma. A series of 8-inch (203 mm) hits stuck the forward section of the destroyer, flooding it and pulling the bow down so far that the anchors were dragging in the water. One of the 5-inch guns was put out of action but in conjunction with strikes from the carrier aircraft forced Chikuma to withdraw, and the Japanese cruiser sank during her retreat. Chikuma's sister ship Tone took up her sister's battle and engaged Heermann until the destroyer withdrew to lay more smoke. At this point, support from "Taffy 2" arrived to aid the escorts and aircraft attacked Tone forcing the cruiser to withdraw. As more support arrived, the Japanese withdrew.[2] For his skillful maneuvering and leadership Heermann's Commanding Officer, Commander Amos Hathaway, was awarded the Navy Cross.[2][3]

Repairs and return to service

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Heermann sailed to Kossol Passage for temporary repairs before making for Mare Island and overhaul, which was completed on 15 January 1945. The destroyer was then assigned to fast carrier task forces in the western Pacific. During the Battle of Iwo Jima, Heermann performed radar and anti-submarine picket duty. On 20 March 1945 the destroyer sank a small surface vessel and rescued seven Japanese crew. Seven days later she took part in the night bombardment of Minami Daito Jima. During the Okinawa campaign she took several enemy planes under fire as she guarded carriers. On 18 April in collaboration with destroyers Mertz, McCord, Collett, and Uhlmann and planes from aircraft carrier Bataan, Heermann sank I-56, a carrier of the kaitens—human-guided torpedoes. She continued to support carrier operations off Okinawa until sailing to Leyte Gulf for replenishment and repairs in late June. On 1 July she helped to screen the fast carrier force that devoted the ensuing five weeks to almost continuous air strikes and bombardment.[2]

On 15 August 1945 Heermann was on radar picket station some 200 miles (320 km) southeast of Tokyo when, several hours after the announcement of the end of hostilities, a kamikaze emerged from a cloud bank and began to dive in Heermann's direction—only to be splashed by the destroyer's gunners in one of the final naval actions of World War II. In the following weeks Heermann operated in the screen of the fast carrier task force providing air cover and air-sea rescue service. The destroyer entered Tokyo Bay on 16 September 1945 and remained in the area to support the occupation forces until 7 October when she sailed for the United States. Heermann was decommissioned at San Diego on 12 June 1946.[2]

1951–1957

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Heermann remained in reserve at San Diego until re-commissioning on 12 September 1951. After training in local waters off California, she departed San Diego on 4 January 1952 for her new base, NS Newport, Rhode Island, where she arrived on 23 January. She spent 1952 training along the eastern coast from New England to the Virginia Capes, followed by ASW and fleet problems during winter months in the Caribbean. The destroyer returned to Newport for operations along the Northeastern seaboard. After a voyage to Plymouth, England, in June and July 1953, she participated in antisubmarine maneuvers between Newport and the Virginia Capes. Heermann departed on a world cruise 3 December 1953. First she sailed for Yokosuka, Japan, by way of the Panama Canal, San Diego, and the Hawaiian Islands. After a two-day replenishment in Yokosuka, she set course for Okinawa where she acted as part of the escort for 3d Marine Division amphibious warfare landings and conducted barrier patrol in support of the exercise. After more maneuvers took her to Korea, Iwo Jima, and the South Coast of Japan, she returned to Yokosuka which she cleared 22 May 1954 to resume her world cruise, calling at Hong Kong and Singapore on her way to the Suez Canal. In the Mediterranean she visited Port Said, Naples, Villefranche, and Barcelona before returning to Newport 17 July 1954.[2]

For the next year and a half Heermann participated in training exercises along the Atlantic coast. On 1 February she sailed to join the 6th Fleet in exercises along the coast of Lebanon, Israel, and Egypt. In April she was invited by Prince Rainier to be in port for his wedding to Miss Grace Kelly from 19 to 24 April 1956. Heermann furnished a 40-man honor guard for the occasion. From Monaco she joined the 6th Fleet off Greece, and then departed for Fall River, Massachusetts, where she arrived 28 May 1956. Heermann operated out of Newport until 6 November, when she sailed for the Mediterranean where she proved to be a first-rate antisubmarine ship in joint exercises with the Italian Navy.[2]

After revisiting Monaco at the invitation of Prince Rainier and Princess Grace, she returned to Fall River 20 February 1957. She served as gunnery school-ship out of Newport until 30 June when she joined Charles J. Badger in the screen of antisubmarine warfare carrier Leyte for two weeks of air operations for the training of Naval Academy midshipmen. She decommissioned at Boston 20 December 1957 and was assigned to the Boston Group of the U.S. Atlantic Reserve Fleet.[2]

Argentine service

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On 10 August 1961, the ship was commissioned into the Argentine Navy.[4] On 14 August 1961 Heermann was formally transferred on a loan basis to the government of Argentina under terms of the Military Assistance Program. She served in the Argentine Navy under the name Brown (D-20).[2] The ship was decommissioned in 1982.[4]

Awards

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In addition to the United States Presidential Unit Citation, Heermann received the Philippine Presidential Unit Citation and nine battle stars for World War II service.

Notes

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References

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Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
USS Heermann (DD-532) was a Fletcher-class destroyer of the United States Navy, named in honor of Lewis Heermann, a pioneering naval surgeon who served during the First Barbary War and advanced medical practices aboard American warships. Laid down on 8 May 1942 by Bethlehem Steel in San Francisco, she was launched on 5 December 1942 and commissioned on 6 July 1943 under the command of Commander Dwight H. Agnew, joining the Pacific Fleet shortly thereafter. During , USS Heermann played a pivotal role in major amphibious operations across the Pacific, providing anti-submarine screening, shore bombardment, and close support for Marine and Army landings. Her most notable action came during the on 25 October 1944, part of the larger , where she was among the outnumbered U.S. escort carriers and destroyers that confronted a superior Japanese battleship force; Heermann aggressively maneuvered to launch torpedoes, draw fire, and protect the vulnerable carriers, surviving heavy damage while contributing to the repulsion of the enemy fleet. For her actions in this engagement, she rescued survivors from the sunk escort carrier USS St. Lo and earned the Presidential Unit Citation, along with nine battle stars for her overall service. Following the war, USS Heermann was decommissioned on 12 June 1946 but was recommissioned on 12 September 1951 to support operations during the , conducting patrols and escort duties in both the Pacific and Atlantic. She later served with the Sixth Fleet in the Mediterranean and underwent a (FRAM) overhaul before being transferred to the Argentine on 10 August 1961 as ARA Brown (D-20), where she continued in service until decommissioned in 1979 and ultimately scrapped in 1983.

Background

Namesake

The USS Heermann (DD-532) was named for Lewis Heermann, a pioneering surgeon in the United States Navy who advanced naval medicine during the early 19th century. Born on 3 August 1779 in Cassel, in the Holy Roman Empire (present-day Kassel, Hesse, Germany), to property owner Johann Heermann, Lewis immigrated to the United States and pursued medical training before entering naval service. He was appointed surgeon's mate on 10 September 1801 and promoted to full surgeon on 27 November 1804, marking one of the earliest formal medical roles in the young U.S. Navy. During the First Barbary War (1801–1805), Heermann served aboard USS Enterprise and participated in the daring raid on Tripoli Harbor on 16 February 1804, where he commanded a small force left aboard the USS Intrepid in support of Lieutenant Stephen Decatur's boarding party to burn the captured frigate USS Philadelphia, preventing its use by Barbary pirates. Heermann's contributions to naval medicine were profound, emphasizing preventive care and infrastructure amid the era's harsh seafaring conditions. He self-published The Medicine Chest at significant personal expense, a practical guide detailing treatments for common naval ailments such as fevers, wounds, and , which served as an early reference for shipboard physicians. In 1811, as at the New Orleans naval station, he personally financed and established a medical facility there, renting it to the government to provide care for sailors; this initiative underscored his commitment to accessible healthcare. Heermann also advocated vigorously for permanent naval hospitals, contributing testimony and reports that influenced the U.S. Congress to pass legislation in 1811 authorizing their construction, thereby laying foundational improvements to the 's medical system. The U.S. selected Heermann's name in 1942 for this as part of a broader effort to honor distinguished early medical officers, recognizing his role in shaping naval healthcare during formative conflicts. Heermann died in New Orleans between 21 and 25 May 1833, leaving a legacy of innovation in .

Construction and commissioning

The USS Heermann (DD-532), a , was laid down on 8 May 1942 by the Corporation at its shipyard in , . Construction proceeded amid the rapid wartime expansion of the U.S. Navy's destroyer force, with the vessel designed for escort and screening duties in fleet operations. She was launched on 5 December 1942, sponsored by Mrs. Edward B. Briggs, wife of Lieutenant Edward B. Briggs, USCGR, and great-grandson of the ship's namesake, Fleet Surgeon Lewis Heermann. Following the launch, the ship underwent , including the installation of machinery, armament, and electronics essential for her role in and surface combat. The Heermann was commissioned on 6 July 1943 at , , with Commander Dwight M. Agnew, USN, in command. Her initial took place in the Pacific off , where she conducted builder's trials, speed runs, and gunnery exercises, mooring daily at Buoy 18. Trials concluded on 26 August 1943, after which she proceeded to for post-shakedown availability before returning to . On 4 October 1943, the destroyer departed for , arriving on 10 October and commencing further training, including firing drills from 11 to 20 October. Upon completion, she was assigned to 47 (DesRon 47) as part of Destroyer Division 92, joining sisters Trathen, Hazelwood, Hoel, and McCord for operations with the Fifth Fleet.

Design and capabilities

Specifications

The USS Heermann (DD-532) was a , a versatile type that formed the backbone of the U.S. Navy's destroyer force during . As built, she had a standard displacement of 2,325 tons and a full load displacement of 2,924 tons, reflecting the class's balance of speed, armament, and endurance for fleet operations. Her dimensions included an overall length of 376 feet 6 inches, a beam of 39 feet 8 inches, and a draft of 17 feet 9 inches at full load, providing stability and maneuverability in diverse sea conditions. Propulsion was provided by four boilers feeding steam to two geared steam turbines, generating 60,000 shaft horsepower on two shafts. This powerplant enabled a maximum speed of 38 knots and a cruising range of 6,500 nautical miles at 15 knots, essential for extended escort and screening duties. The ship's designed complement was 273 officers and enlisted personnel, sufficient to operate her systems effectively under wartime conditions. For detection capabilities, Heermann was equipped with an initial SG surface-search and an SC air-search , enhancing in both surface and aerial engagements from commissioning.
AttributeSpecification
Class and (DD-532)
Displacement2,325 tons (standard); 2,924 tons (full load)
DimensionsLength: 376 ft 6 in; Beam: 39 ft 8 in; Draft: 17 ft 9 in (full load)
Propulsion4 × boilers; 2 × geared turbines; 60,000 shp; 2 shafts
PerformanceMaximum speed: 38 knots; Range: 6,500 nmi at 15 knots
Crew273 (designed)
SensorsSG surface-search ; SC air-search

Armament and modifications

USS Heermann, as a , was originally armed with five 5-inch/38 caliber guns in single mounts for surface and anti-aircraft fire, two quintuple mounts carrying ten 21-inch torpedo tubes, four single 40 mm anti-aircraft guns, and seven 20 mm Oerlikon anti-aircraft guns, along with depth charge tracks and projectors for . Early in her service, the ship received additional anti-submarine equipment, including a forward-throwing mortar system, which complemented her capabilities during Pacific patrols. Wartime modifications focused on enhancing anti-aircraft and detection systems; by 1944, her anti-aircraft battery was expanded with additional 40 mm guns, bringing the total to six, and more 20 mm Oerlikons were added for a total of 10 or 11, reflecting the growing threat from Japanese aircraft. Radar upgrades included the installation of the SG surface search (later designated SG-1) and SP for improved detection, which proved critical during engagements like the where her guns and torpedoes were employed against enemy surface units. During her 1951 reactivation for service, Heermann underwent significant postwar alterations, including the replacement of some 5-inch guns with three 3-inch/50 caliber guns to modernize her armament, along with updated anti-submarine weapons and a tripod foremast to support new and fire control systems. The torpedo tubes and remaining 40 mm guns were retained, but the overall configuration shifted toward enhanced anti-submarine and anti-air roles suitable for operations. Upon transfer to the on 10 August 1961 as ARA Brown (D-20), the ship received only minor updates for regional operations, such as basic maintenance and potential sensor refreshes. She was stricken from the U.S. on 2 July 1971. Her armament remained largely as configured in U.S. service, with the 3-inch and 5-inch guns continuing in use until decommissioning on 28 August 1982 and sold for scrapping on 15 December 1982 (ultimately scrapped in 1983).

World War II service

Early operations

Following her commissioning on 6 July 1943 at under the command of Dwight M. Agnew, USS Heermann conducted shakedown training along the coast through August, including speed trials, gunnery exercises, and torpedo drills. She departed in early October 1943, arriving at on 10 October to complete additional training and join the Pacific Fleet. On 21 October 1943, Heermann sortied from as part of the Fifth Fleet's Task Unit 53.3.1, screening the carrier and other ships en route to the for Operation Galvanic, the invasion of and Makin atolls. Arriving off on 20 November, she engaged and sank a small Japanese vessel with 5-inch gunfire while providing pre-invasion bombardment. The next day, Heermann dodged an enemy , silenced a machine-gun nest on Betio Island with , and supported Marine landings amid intense combat, during which she briefly ran aground on a reef but sustained only minor damage. Through 23 November, she continued screening duties and fire support, then escorted oilers to Nandi, , before returning to the for further operations in support of the Gilberts campaign. Heermann departed on 23 January 1944 with a replenishment group for the campaign, anchoring off Kwajalein on 31 January to begin anti-submarine screening for the invasion force. Over the next week, she patrolled the lagoon entrance, rescued the crew of a downed PBM Mariner flying boat on 7–8 February after providing suppressing fire against shore batteries, and delivered accurate gunfire support against Japanese positions during the landings on Roi and islands. Shifting to Eniwetok Atoll in mid-February, Heermann bombarded defensive positions on Engebi Island from 17 to 19 February, screened transports off Parry and Japtan islands, and took several Japanese prisoners during the operation, which concluded on 24 February. She then patrolled west of Kwajalein until early March. Arriving at Purvis Bay in the on 18 March 1944, Heermann joined the Third Fleet's Destroyer Squadron 47 and shifted focus to operations in the South Pacific. Through April, she patrolled the waters around Emirau Island to protect assault forces during the unopposed landings there, conducting anti-submarine sweeps and escorting reinforcements. In May and June, Heermann escorted convoys between Florida Island, Bougainville, and Green Island, hunted Japanese barges off New Hanover, and on 11 June bombarded enemy positions in Fangelawa Bay on New Ireland, destroying several shore installations. These duties emphasized patrols, convoy protection, and occasional shore bombardments to secure Allied advances in the Solomons. By late summer 1944, Heermann remained active in the Solomons, providing anti-submarine screening and escort services for troop transports and supply ships amid ongoing regional operations. In early September, she joined an task group at Purvis Bay, setting the stage for her involvement in the liberation of the .

Battle off Samar

On 25 October 1944, during the Battle off Samar in the Philippine Sea, USS Heermann (DD-532) was part of Task Unit 77.4.3 ("Taffy 3"), an escort carrier group under Rear Adm. Clifton A. F. Sprague, when it unexpectedly encountered the superior Japanese Center Force led by Vice Adm. Takeo Kurita. This force included four battleships—such as Yamato and Nagato—six heavy cruisers, two light cruisers, and 11 destroyers, vastly outgunning Taffy 3's six escort carriers, three destroyers, and three destroyer escorts. At approximately 0645, as Japanese shells began straddling the American formation, Heermann joined destroyers Johnston and Hoel in steaming at flank speed to lay a protective smoke screen, concealing the vulnerable carriers from enemy gunfire. Heermann, under Cmdr. Amos T. Hathaway, led a daring charge through the carrier screen toward the Japanese van at 0750, initiating the first despite the overwhelming odds. The ship fired a salvo of five projectiles and seven torpedoes at the heavy cruiser Haguro around 0754, though the torpedoes missed as the target evaded; Heermann then shifted to the Haruna with its 5-inch guns while launching three additional torpedoes at the at 0800, with one possibly striking Haruna's starboard quarter and forcing Yamato to maneuver evasively. Continuing the attack, Heermann exchanged point-blank gunfire with the Tone-class Chikuma—contributing to the cumulative damage that led to its eventual sinking by combined and efforts—and provided covering for the destroyer escorts' second torpedo assault on Japanese cruisers and destroyers. Throughout, the executed sharp evasive zigzags to avoid collisions with and Hoel, while maintaining continuous smoke laying to shield the carriers and disrupt Japanese targeting. Amid the chaos, Heermann sustained damage from multiple 8-inch shell hits and fragments: a shell struck the pilothouse, killing three crewmen and mortally wounding one; flooding occurred in forward compartments at frame 42 from additional hits, with the bow down five feet and speed reduced to 10 knots. Despite this, the ship pressed on, screening the carriers and firing on Haruna and Nagato until Japanese fire slackened around 0925, when Kurita ordered a withdrawal northwest, misled by the aggressive U.S. tactics and reports of additional American forces. In total, Heermann suffered four killed and 17 wounded but remained operational, later rescuing 81 survivors from the sunk St. Lo, including its captain. Heermann's actions were credited with inflicting significant damage on Japanese vessels, including probable torpedo hits on Haruna and gunfire contributions against Chikuma and Kongo, playing a key role in Taffy 3's improbable repulsion of the Center Force. The destroyer's performance exemplified what became known as "the destroyermen’s finest hour," earning the Presidential Unit Citation for the ship and Navy Crosses for Hathaway and others involved.

Later operations

Following the , in which USS Heermann sustained heavy damage that resulted in four killed and 17 wounded, the ship transferred her casualties to the hospital ship USS Bountiful (AH-9) at Kossol Passage on 27 October 1944. Temporary repairs were performed alongside the USS Prometheus (AR-3) from 28 to 30 October, after which she proceeded to Seeadler Harbor for further assessment. The extent of the battle damage necessitated a major overhaul at the Yard, where she arrived on 26 November 1944 and remained until 8 January 1945; this experience prompted heightened caution in her later screening roles to avoid similar vulnerabilities. Heermann rejoined the Pacific Fleet on 1 February 1945, screening aircraft carriers of Task Force 58 during air strikes on the Japanese home islands, including repeated attacks on Tokyo from 16 to 24 February. As part of the Iwo Jima campaign beginning 19 February, she provided anti-submarine warfare screening, radar picket duty, and fire support for the landings, operating offshore as the task force that enabled the historic flag-raising on Mount Suribachi on 23 February. On 20 March, she sank a small Japanese vessel off Iwo Jima and rescued seven survivors. She also rescued the crew of a crashed Curtiss SB2C-4E Helldiver from USS Intrepid (CV-11) on 26 March and conducted a bombardment of Minami Daitō Jima the following day. During the Okinawa campaign from April to June 1945, Heermann served on picket duty east of the island with Task Force 58, screening carriers and engaging in anti-aircraft defense amid intense kamikaze assaults, including downing enemy aircraft on 11 April. On 18 April, in coordination with destroyers USS Mertz (DD-690), USS McCord (DD-534), USS Collett (DD-730), and USS Uhlmann (DD-687), along with aircraft from USS Bataan (CVL-29), she sank the Japanese submarine I-56 east of Okinawa using depth charges; the submarine was carrying kaiten human torpedoes. She continued screening operations through May before retiring to Ulithi on 11 May for upkeep and rejoining the task force shortly thereafter. After receiving news of Japan's surrender on 15 August 1945, Heermann downed a Yokosuka D4Y "Judy" dive bomber and conducted patrols in the western Pacific, including the East China Sea, to support occupation preparations. She entered Tokyo Bay on 16 September for upkeep in berth F-88, departing on 1 October to embark passengers at Buckner Bay, Okinawa, on 4 October. Heermann then returned to the United States via the Pacific route, arriving at Vancouver, Washington, on 19 October and proceeding to San Diego on 1 November 1945 to begin pre-inactivation overhaul.

Postwar service

U.S. Navy operations

Following the end of , USS Heermann returned to the , anchoring in San Pedro Bay, California, on 1 November 1945, where she unloaded ammunition and began pre-inactivation overhaul at Todd Shipbuilding Corporation on 15 November 1945. She completed the overhaul in April 1946 and was towed to for final preparations. On 12 June 1946, the destroyer was decommissioned and placed in reserve at , remaining inactive as part of the Pacific during the immediate postwar demobilization period. In response to escalating tensions leading to the , USS Heermann was withdrawn from reserve and reactivated, with recommissioning ceremonies held at on 12 September 1951 under the command of C. Spencer. During this reactivation, the ship underwent modernization, including updates to its armament such as the replacement of some 5-inch guns with twin 3-inch/50 caliber mounts to enhance anti-aircraft capabilities. Following shakedown operations in local waters, she visited from 17 November to 21 December 1951 before departing on 4 January 1952 for her new home port at , arriving on 20 January to join the Atlantic Fleet. Throughout 1952, USS Heermann conducted training exercises in the Atlantic and , including operations at , , starting 4 March, and an overhaul at Boston Naval Shipyard from 7 August to 9 November. In early 1953, she participated in further maneuvers, departing Boston for on 25 January, followed by a transatlantic deployment to , , from 11 June to 23 June for joint exercises with Allied navies. These activities focused on and fleet coordination amid contingencies. From 13 December 1953 to 18 July 1954, USS Heermann undertook an extended Pacific deployment as part of a world cruise, departing Newport and transiting via to , arriving 12 January 1954. She provided support to forces in the Korean theater by patrolling the east coast of Korea from 20 January to 14 April, escorting carriers with 77 in the from 30 January to 10 February, and conducting shore bombardments and anti-submarine exercises off Sasebo, Japan, and Okinawa in March. The cruise continued with port visits to and , contributing to regional stability following the Korean Armistice, before returning to Newport. Between 1954 and 1957, USS Heermann engaged in routine Atlantic and Mediterranean operations, including a deployment to the Sixth Fleet from February to May 1956, where she visited , , on 19 February and on 17 April for ceremonial duties during Prince Rainier III's wedding, while participating in NATO-oriented exercises. She returned to Newport on 28 May 1956 and conducted additional East Coast training, such as maneuvers off [Block Island](/page/Block Island) on 25 March 1957. On 20 December 1957, the destroyer was decommissioned at Naval Shipyard and transferred to the . USS Heermann was finally stricken from the on 1 September 1975.

Argentine Navy service

On 14 August 1961, the USS Heermann was transferred on loan to Argentina under the U.S. Military Assistance Program. Renamed ARA Brown (D-20), she was commissioned into the on 10 October 1961 and assigned to the Brown-class of ex-Fletcher destroyers, which formed a key component of 's surface fleet during the era. Homeported at the Puerto Belgrano Naval Base, the southern hemisphere's largest naval facility, ARA Brown conducted routine patrols in the South Atlantic, emphasizing and escort operations to secure maritime approaches amid regional tensions. The ship remained in Argentine service until 1979, at which point it was decommissioned; it had been stricken from the U.S. in 1975 while on loan. The destroyer participated in multinational exercises, including the UNITAS series, which promoted hemispheric defense cooperation with the and other Latin American navies; for instance, during UNITAS XI in 1970, she joined forces from , , , and the U.S. for anti-submarine and convoy protection drills around . Throughout the and , ARA Brown supported indirect efforts related to Falklands Islands tensions through training and readiness activities, though she saw no direct combat. In the , the ship underwent modernization, including engine overhauls to extend propulsion reliability and radar system updates for improved detection capabilities, allowing her to remain operational amid evolving threats. ARA Brown was decommissioned in 1979 at Puerto Belgrano after approximately 18 years of service, demonstrating exceptional longevity for a World War II-era vessel in foreign operation compared to many U.S. Navy contemporaries that were retired earlier. Her contributions bolstered Argentina's naval presence in the South Atlantic during a period of strategic realignment.

Recognition and legacy

Awards

During her service with the in , USS Heermann (DD-532) earned the Presidential Unit Citation for extraordinary heroism as part of Task Unit 77.4.3 (Taffy 3) during the on 25 October 1944, where she engaged superior Japanese naval forces despite heavy damage, contributing to the repulsion of the enemy fleet. This award was shared with the other surviving ships of Taffy 3, recognizing their collective actions in defending the invasion forces. Heermann also received nine battle stars for participation in Asiatic-Pacific Theater campaigns, denoting her involvement in key operations from screening amphibious landings to providing gunfire support and anti-submarine protection. These stars correspond to the following campaigns:
CampaignDates
November–December 1943
January–February 1944
MarianasJune–July 1944
September 1944
October 1944
December 1944–January 1945
February 1945
OkinawaApril–June 1945
July–August 1945
In recognition of her contributions to the liberation of the , particularly the actions off and , Heermann was awarded the Philippine Presidential Unit Citation by the Republic of the . During her Korean War service from 1952 to 1953, Heermann supported forces with shore bombardments and patrols but received no additional unit commendations beyond standard service medals. Upon transfer to the as ARA Almirante Brown (D-20) in 1961, the ship participated in multinational UNITAS exercises but earned no major combat awards, only routine service ribbons for training and interoperability operations.

Decommissioning and fate

Following her final recommissioning in 1951, USS Heermann conducted training operations along the U.S. East Coast until she was decommissioned for the last time on 20 December 1957 at the Naval , after which she was berthed with the . She remained in reserve until 10 August 1961, when she was loaned to under the Mutual Defense Assistance Program and transferred on 14 August 1961, recommissioned as ARA Almirante Brown (D-20). In Argentine service, Almirante Brown participated in various operations until she was decommissioned in 1979. She was stricken from the Argentine Naval Register in 1982. The ship was subsequently sold for scrap and dismantled at in 1983, concluding nearly 40 years of combined U.S. and Argentine service. Heermann endures as a symbol of heroism in the , where she was the sole U.S. from Task Unit 77.4.3 ("Taffy 3") to emerge despite sustaining heavy damage after engaging a vastly superior Japanese force. Her exploits are preserved in official histories and action reports, highlighting the effectiveness of aggressive tactics by outnumbered escorts. Although not preserved as a , Heermann is commemorated through tributes in exhibits, such as at the National Museum of the Pacific War, and her role continues to be studied in tactics for insights into scenarios.
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