The 3rd Air Defense Artillery Regiment is an air defense artillery regiment of the United States Army, first formed in 1821 as the 3rd Regiment of Artillery.
Image: 3 ADA Rgt DUI
Battery A, 2nd U.S. Artillery and Batteries C&G (combined), 3rd U.S. Artillery near Fair Oaks, Virginia, June 1862. These were all horse artillery units at the time.
The U.S. Army Coast Artillery Corps (CAC) was an administrative corps responsible for coastal, harbor, and anti-aircraft defense of the United States and its possessions between 1901 and 1950. The CAC also operated heavy and railway artillery during World War I.
Practice loading of a 10-inch gun on a disappearing carriage at Fort Hamilton, Brooklyn, NY, a typical Endicott period installation.
Typical Endicott period battery with components labeled.
USAMP Major Samuel Ringgold, built in 1904, which planted practice groups of mines in the Columbia River during the 1920s. (National Archives and Records Administration)
US-manned 155mm GPF gun of Battery F, 55th Coast Artillery, France 1918