The 4th Air Defense Artillery Regiment was constituted 1 June 1821 in the Regular Army as the 4th Regiment of Artillery and organized from new and existing units with headquarters at Pensacola, Florida. As a result of the division of the Artillery Corps into Coast and Field Artillery units, the Regiment was broken up 13 February 1901, and its elements reorganized and redesignated as separate numbered companies and batteries of the Artillery Corps.
The 83rd Field Artillery Regiment is a regiment of the Field Artillery Branch of the United States Army.
The 12th Field Artillery Regiment is a unit of the United States Army.
The 2nd Field Artillery Regiment is a field artillery regiment in the United States Army. Currently a parent regiment under the U.S. Army Regimental System, the regiment has a single active battalion, the 2nd Battalion, 2nd Field Artillery, assigned to the 428th Field Artillery Brigade at the U.S. Army Field Artillery, Fort Sill, OK. Their long history is currently represented by the 2nd Field Artillery Mascots
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 2nd Air Defense Artillery Regiment is an air defense artillery regiment of the United States Army, first formed in 1821 as a field artillery unit.
The 7th Air Defense Artillery Regiment is an air defense artillery regiment of the United States Army, first constituted in the Regular Army as the 7th Regiment of Artillery on 8 March 1898. The 6th and 7th U.S. Artillery Regiments were constituted on 8 March 1898, three weeks after the explosion of USS Maine in Havana, Cuba on 15 February 1898, as the United States' declaration of war on Spain and commencement of the Spanish–American War seemed imminent.
The 8th Field Artillery Regiment is a field artillery regiment of the United States Army first formed in 1916. The regiment served in World War I, World War II, and Korea, and regimental units have served in Vietnam, Honduras, Panama, Operation Desert Storm, Operation Enduring Freedom and Operation Iraqi Freedom. Currently organized as a parent regiment under the U.S. Army Regimental System, the regiment's only active component is the 2nd Battalion, 8th Field Artillery Regiment, currently assigned to the 1st Infantry Brigade Combat Team, 11th Airborne Division and stationed at Fort Wainwright, Alaska.
The 9th Field Artillery Regiment is a field artillery regiment of the United States Army first formed in 1916. The regiment served in Hawaii during World War I, 3rd, 4th, 7th, and 9th Divisions between the world wars, and with 3rd Infantry Division during World War II and Korea. Since 1957, the regiment has been a parent regiment under the Combat Arms Regimental System and the U.S. Army Regimental System, with regimental elements serving with the 3rd, 4th, 10th, 25th, 79th, 83rd, and 96th Infantry Divisions and various field artillery brigades and groups. The regiment's single active component, the 1st Battalion, 9th Field Artillery Regiment, is assigned to the 2nd Brigade Combat Team, 3rd Infantry Division and stationed at Fort Stewart, Georgia.
The 13th Field Artillery Regiment is a field artillery regiment of the United States Army first formed in 1916.
The 14th Field Artillery Regiment is a parent field artillery regiment of the United States Army, currently represented in the Regular Army by its 1st Battalion, a HIMARS unit with the 75th Field Artillery Brigade at Fort Sill, Oklahoma.
The 15th Field Artillery Regiment (FAR) is a field artillery regiment of the United States Army first formed in 1916. A parent regiment under the U.S. Army Regimental System, the 15th FAR currently has two active battalions: the 1st Battalion, 15th Field Artillery Regiment, is assigned to the 1st Brigade Combat Team, 2nd Infantry Division, while the 2nd Battalion, 15th Field Artillery Regiment, is assigned to the 2nd Brigade Combat Team, 10th Mountain Division.
The 16th Field Artillery Regiment is a field artillery regiment of the United States Army. The regiment served with the 4th Division in World War II and with the 4th and 8th Divisions between the World Wars. As the 16th Armored Field Artillery Battalion, it served with the 9th Armored Division during World War II, and with the 2nd Armored Division after the war. Designated a parent regiment under the Combat Arms Regimental system, and later the U.S. Army Regimental System, since 1957, regimental elements have served with the 1st, 2nd and 4th Armored Divisions; the 4th, 8th, and 81st Infantry Divisions; and the 1st Cavalry Division. Regimental elements have participated in combat in Vietnam, and in Operation Iraqi Freedom. The regiment currently has a single active battalion, the 3rd Battalion, 16th Field Artillery, assigned to the 2nd Brigade Combat Team, 1st Cavalry Division and stationed at Fort Cavazos, Texas.
The 17th Field Artillery Regiment is a field artillery regiment of the United States Army first formed in 1916.
The 30th Field Artillery Regiment is a field artillery regiment of the United States Army, first constituted in 1918 in the National Army (USA).
The 40th Field Artillery Regiment is a field artillery regiment of the United States Army, first Constituted 5 July 1918 in the National Army (USA).
The 76th Field Artillery Regiment is a field artillery regiment of the United States Army. First formed as a cavalry regiment in 1916, the regiment was converted to field artillery in 1917, and served in Europe during World War I with the 3rd Division and as a separate battalion during World War II, as well as in peacetime at Fort Knox, KY, and Fort Devens, MA. Since 1959, the regiment has been a parent regiment under the Combat Arms Regimental System and the U.S. Army Regimental System, with regimental elements serving with the 3rd Infantry Division in Germany and Operation Iraqi Freedom, with the 7th Infantry Division in Korea, and in the Army Reserve. No regimental elements are currently active.
The 77th Field Artillery Regiment is a field artillery regiment of the United States Army. First constituted 1916 in the Regular Army as a cavalry regiment. Reorganized in 1917 as field artillery and given its current designation.
The 79th Field Artillery Regiment is a field artillery regiment of the United States Army. First constituted 1916 in the Regular Army.
The 377th Field Artillery Regiment is a field artillery regiment of the United States Army. A parent regiment under the U.S. Army Regimental System, the regiment's 2nd Battalion, 377th Field Artillery Regiment is assigned to the 2nd Infantry Brigade Combat Team (Airborne), 11th Airborne Division. Elements of the regiment have also served with the 101st Airborne Division and 82nd Airborne Division, and have seen service in World War II, Vietnam, and in both Iraq and Afghanistan during the Global War on Terror. The 1st and 3rd Battalions as well as Batteries D and E are Inactive.
United States 
