Union Army Balloon Corps

The Union Army Balloon Corps was a branch of the Union Army during the American Civil War, established by presidential appointee Thaddeus S. C. Lowe. It was organized as a civilian operation, which employed a group of prominent American aeronauts and seven specially built, gas-filled balloons to perform aerial reconnaissance on the Confederate States Army.

Lowe was one of a few veteran balloonists who was working on an attempt to make a transatlantic crossing by balloon. His efforts were interrupted by the onset of the Civil War, which broke out one week before one of his most important test flights. Subsequently, he offered his aviation expertise to the development of an air-war mechanism through the use of aerostats for reconnaissance purposes. Lowe met with U.S. President Abraham Lincoln on 11 June 1861, and proposed a demonstration with his own balloon, the Enterprise, from the lawn of the armory directly across the street from the White House. From a height of 500 feet (150 m) he telegraphed a message to the President describing his view of the Washington, D.C., countryside. Eventually he was chosen over other candidates to be chief aeronaut of the newly formed Union Army Balloon Corps.

The Balloon Corps with a hand-selected team of expert aeronauts served at Yorktown, Seven Pines, Antietam, Fredericksburg, and other major battles of the Potomac River and the Virginia Peninsula. The Balloon Corps served the Union Army from October 1861 until the summer of 1863, when it was disbanded following the resignation of Lowe.

The use of balloons as an air-war mechanism was first recorded in France by the French Aerostatic Corps at the Battle of Fleurus in 1794. U. S. President Abraham Lincoln became interested in an air-war mechanism for reconnaissance purposes. This created a notion at the War Department and at the Treasury that some sort of balloon aviation unit need be established and headed by a "Chief Aeronaut". Several top American balloonists traveled to Washington in hopes of obtaining just such a position. However, there were no proposed details to the establishment of such a unit, or whether it would even be a military or civilian operation. Nor was there any set method to the process of selecting a Chief Aeronaut, rather it became a free-for-all in attempts to attract the attention of any officials in either the government or the military. In actuality the use of balloons was left to the discretion of the commanding generals through a process of trial and error based on the best recommendations of the balloonists themselves. Of those seeking the position, only two were given actual opportunities to perform combat aerial reconnaissance, Prof. Thaddeus Lowe and Mr. John LaMountain.

Professor Thaddeus S. C. Lowe was one of the top American balloonists who sought the position of Chief Aeronaut for the Union Army. Also vying for the position were Prof. John Wise, Prof. John LaMountain, and Ezra and James Allen. All these men were aeronauts of extraordinary qualification in aviation of the day. Among them Lowe stood out as the most successful in balloon building and the closest to making a transatlantic flight. His scientific record was held in high regard among colleagues of the day, to include one Prof. Joseph Henry of the Smithsonian Institution, who became his greatest benefactor.

On Henry's and others' recommendations, Lowe was contacted by Secretary of the Treasury Salmon P. Chase, who invited him to Washington for an audience with Secretary of War Simon Cameron and the President. On 11 June 1861, Lowe was received by Lincoln and immediately offered to give the President a live demonstration with the balloon.

On Saturday, 16 June, with his own balloon, the Enterprise, Lowe ascended some 500 feet (150 m) above the Columbian Armory with a telegraph key and operator, and a wire following a tether line to the White House across the street. From aloft he transmitted the message:

Balloon Enterprise