The 60th Air Defense Artillery Regiment is an air defense unit of the United States Army.
The 52nd Air Defense Artillery Regiment is an air defense artillery regiment of the United States Army first organized in 1917 as a railway gun unit. It continued in that role unit 1943, when the regiment was broken in separate railway gun battalions, and in the following year the units were reorganized and redesignated as field artillery.
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.
The 44th Air Defense Artillery Regiment is an Air Defense Artillery regiment of the United States Army, first constituted in 1918 in the Regular Army during World War I. During World War II the unit served as the 54th Coast Artillery Regiment
The 56th Air Defense Artillery is a training regiment in the United States Army.
The 71st Air Defense Artillery was a regiment in the United States Army.
The 13th Coast Artillery Regiment was a Coast Artillery regiment in the United States Army. Elements of the regiment served during World War II in the Harbor Defenses of Pensacola, HD Key West, HD Galveston, HD Charleston, Temporary HD of New Orleans, and in Bora Bora in the South Pacific. The regiment was broken up and its elements redesignated on 31 August 1944 as part of an Army-wide reorganization.
The 15th Coast Artillery was a Coast Artillery Corps regiment in the United States Army. Along with the 16th Coast Artillery, it manned the Harbor Defenses of Pearl Harbor and other fortified sites on Oahu, Hawaii from 1924 until broken up into battalions in August 1944 as part of an Army-wide reorganization.
The 53rd Coast Artillery Regiment was a Coast Artillery regiment in the United States Army. In World War I it was a railway artillery regiment in France. In World War II it was reactivated with mobile 155 mm guns.
The 62nd Air Defense Artillery Regiment is an Air Defense Artillery regiment in the United States Army. The lineages of some of the units that have been part of the 62nd Air Defense Artillery and its predecessors give the regiment campaign credit for the War of 1812.
The 63rd Coast Artillery was a Coast Artillery regiment in the United States Army. It was deactivated and broken up in 1943, with its last descendants inactivated in 1958.
The 64th Coast Artillery was a Coast Artillery regiment in the United States Army.
The 18th Coast Artillery Regiment was a Coast Artillery regiment in the United States Army. It was the Regular Army component of the Harbor Defenses of the Columbia, replacing the 3rd Coast Artillery there. Other elements of the regiment were also part of the Harbor Defenses of San Francisco. The regiment was active from 1940 until withdrawn in April 1944 and inactivated the following month as part of an Army-wide reorganization.
The 19th Coast Artillery Regiment was a Coast Artillery regiment in the United States Army. It was the garrison of the Harbor Defenses of San Diego, replacing the 3rd Coast Artillery there. The regiment was active from 1940 until broken up into battalions and partially inactivated in October 1944 as part of an Army-wide reorganization.
The 20th Coast Artillery Regiment was a Coast Artillery regiment in the United States Army. It was the garrison of the Harbor Defenses of Galveston in World War II, with Battery C deployed to Tongatapu, Tonga March-August 1942. Until the 20th CA (HD) was fully activated in April 1942, HD Galveston was also garrisoned by the 265th Coast Artillery (HD) Regiment and elements of the 50th Coast Artillery (TD) Regiment. The 20th CA Regiment was active from August 1940 until broken up and partly deactivated in August 1944 as part of an Army-wide reorganization.
The 21st Coast Artillery Regiment was a regiment of the United States Army Coast Artillery Corps. It was the regular army component of the Harbor Defenses of the Delaware in World War II. The 21st CA (HD) Regiment was active from February 1940 until broken up in October 1944 as part of an Army-wide reorganization.
The 241st Coast Artillery Regiment was a Coast Artillery Corps regiment in the Massachusetts National Guard. It garrisoned the Harbor Defenses of Boston, Massachusetts 1924–1944.
The 243rd Coast Artillery Regiment was a Coast Artillery Corps regiment in the Rhode Island National Guard. It garrisoned the Harbor Defenses of Narragansett Bay, Rhode Island 1924–1944.
The 50th Coast Artillery Regiment was a Coast Artillery Corps regiment in the Regular Army. It was mobilized in World War I and World War II.
The 27th Coast Artillery Battalion was a Coast Artillery battalion in the United States Army. It was the garrison of the Harbor Defenses of Bermuda, part of the US Army's Bermuda Base Command, from February 1942 through June 1944. A predecessor unit in World War I was the 27th Artillery (Coast Artillery Corps), which existed briefly from October through December 1918.
United States