1st Battalion, 2nd Air Defense Artillery Regiment (United States)

The 1st Battalion, 2nd Air Defense Artillery Regiment (1/2 ADART) is a battalion of the US Army's Air Defense Artillery Branch.

18th Century
The 2nd Battalion, 2nd Air Defense Artillery Regiment trace their history back to the 2nd Regiment of Artillerists and Engineers formed in the regular army in April 1798. In June it was renamed becoming John Henry's Company, 2nd Regiment of Artillerists and Engineers. By 1799 it was attached to the 4th Battalion of the same regiment, but retained their former name.