Dale Adam Dye Jr. (born October 8, 1944) is an American actor, technical advisor, radio personality and writer. A decorated Marine veteran of the Vietnam War, Dye is the founder and head of Warriors, Inc., a technical advisory company specializing in portraying realistic military action in Hollywood films. Dye has also offered his expertise to television, such as the HBO miniseries Band of Brothers and The Pacific, the Apple TV+ miniseries Masters of the Air, and video games, including the Medal of Honor series.

Dye was born on October 8, 1944, in Cape Girardeau, Missouri, to Dale Adam and Della Grace (née Koehler) Dye. His father was a liquor salesman in and around St. Louis and took Dale with him as he visited working-class taverns. There he heard war stories from World War II veterans. One particular story about man-to-man fighting told by a Marine who said he had fought in the Pacific Theater piqued Dale's attention. He looked up the Battle of Iwo Jima that night and made up his mind to join the U.S. Marines. Dye was educated at St. Joseph's Military Academy in Chicago and the Missouri Military Academy in Mexico, Missouri.

Dye had hoped to attend the U.S. Naval Academy, but after failing the entrance exam three times and having exhausted his family's meager funds getting through military academy, he enlisted in the U.S. Marines in January 1964. His unit was among the first to deploy to Vietnam in 1965. Officers in the unit noticed his keen observational skills and literary interest, and encouraged him to reclassify as a combat correspondent. He became one of a very few Marine combat correspondents. He sent stories to military publications and to the hometown newspapers of fellow Marines. As a correspondent, he saw more battles than many low-ranking infantrymen. Dye developed an immense respect for the "grunts" who took the brunt of any action.

Dye was wounded during the Tet Offensive in 1968 and had to recuperate in a rear area. During this time, the 2nd Battalion 3rd Marines — the unit he had traveled with — was preparing for Operation Ford. Dye persuaded the battalion commander to let him accompany the battalion as a war correspondent. During the next week, the battalion engaged in a number of firefights with units of the North Vietnamese People's Army of Vietnam (PAVN). On March 18, 1968, Dye replaced an assistant machine gunner who had been killed. The machine gun position was isolated forward of the remainder of the battalion. Although he was wounded, Dye exposed himself to intense enemy fire to retrieve ammunition for the machine gun to help hold off PAVN soldiers during an all-night firefight. During other engagements, he exposed himself to enemy fire to rescue several wounded Marines and a Navy corpsman. As a result of his actions, he was awarded the Bronze Star Medal with Combat "V" for heroism.

"Dye's heart is with the grunts", said Bob Rea, who worked with Dye as a combat correspondent during the worst of Tet. "He feels like he owes something to those people. He is a grunt wannabe." During three tours of duty in South Vietnam, he participated in 31 combat operations. During his 1967-to-1968 and 1969-to-1970 tours of duty, he was attached to two different battalions of the 1st Marine Division. Dye spent a total of 13 years as an enlisted Marine, rising to the rank of Master Sergeant before being appointed a warrant officer in 1976. Afterward, he entered into the Limited Duty Program and became commissioned as a captain. He is considered a "mustang", an enlisted man who receives a commission as an officer. While he was a captain, he was deployed to Beirut for duty with the Multinational Force in Lebanon in 1982 and 1983. Shortly after his return, the Marine barracks were attacked, resulting in the deaths of 241 Americans, most of whom had been stationed at Camp Lejeune, North Carolina.^{[citation needed]}

Fellow Marine correspondent Gustav Hasford dubbed him "Daddy D.A." (as he was among the oldest of the correspondents) and included him as a character in his first semi-autobiographical Vietnam novel The Short-Timers, and more extensively in his second, The Phantom Blooper. The movie based on Hasford's first novel Full Metal Jacket included the "Daddy D.A." character (played by Keith Hodiak), though neither the character nor Dye's name is explicitly mentioned in the dialogue.

In his book Dispatches, journalist Michael Herr provides a vivid picture of Dye during the chaos of the Tet Offensive and the Battle of Huế:

And there was a Marine correspondent, Sergeant Dale Dye, who sat with a tall yellow flower sticking out of his helmet cover, a really outstanding target. He was rolling his eyes around and saying, 'Oh yes, oh yes, Charlie's got his shit together here, this will be bad," and smiling happily. It was the same smile I saw a week later when a sniper's bullet tore up a wall two inches above his head, odd cause for amusement in anyone but a grunt.