[1] Constituted 1 June 1821 in the Regular Army as the 3rd Regiment of Artillery and organized from existing units with headquarters at Fort Washington, Maryland.

[4] Regiment broken up 13 February 1901 and its elements reorganized and redesignated as separate numbered companies and batteries of the Artillery Corps.

Reconstituted 20 January 1950 in the Regular Army; concurrently consolidated with the 3rd Antiaircraft Artillery Automatic Weapons Battalion (active) (see ANNEX 1) and consolidated unit designated as the 3rd Antiaircraft Artillery Automatic Weapons Battalion, an element of the 3rd Infantry Division.

Redesignated 13 March 1952 as the 18th Antiaircraft Artillery Gun Battalion Activated 2 May 1952 at Fort Custer, Michigan.

[1] 522nd Coast Artillery Battalion disbanded 15 September 1945 at Huntington Beach (Bolsa Chica Military Reservation), California.

Reconstituted 28 June 1950 in the Regular Army; concurrently consolidated with the 43rd Antiaircraft Artillery Automatic Weapons Battalion (active) (see ANNEX 2) and consolidated unit designated as the 43rd Antiaircraft Artillery Automatic Weapons Battalion, an element of the 10th Infantry Division.

[1] Constituted 6 July 1942 in the Army of the United States as the 534th Coast Artillery Battalion (Antiaircraft) (Automatic Weapons).

[1] Departed New York port of embarkation 28 April 1943; arrived in North Africa 11 May 1943 and in Italy 9 September 1943.

Moved to France as part of Operation Dragoon 15 August 1944; has campaign credit for this and the Battle of the Bulge (Ardennes-Alsace).

[1] Redesignated 9 December 1948 as the 3rd Antiaircraft Artillery Automatic Weapons Battalion and allotted to the Regular Army.

[1][15] Departed Boston Port of Embarkation 28 April 1943; arrived in North Africa 12 May 1943; moved to Italy 9 September 1943.

[1] Redesignated 18 June 1948 as the 43rd Antiaircraft Artillery Automatic Weapons Battalion and assigned to the 10th Infantry Division.

[1] War of 1812: Canada[1] Indian Wars: Seminoles; Washington 1858[1] Mexican War: Palo Alto; Resaca de la Palma; Monterey; Buena Vista; Vera Cruz; Cerro Gordo; Contreras; Churubusco; Molino del Rey; Chapultepec; Puebla 1847[1] Civil War: Peninsula; Antietam; Fredericksburg; Chancellorsville; Gettysburg; Wilderness; Spotsylvania; Petersburg; Shenandoah; Mississippi 1863; Tennessee 1863; Tennessee 1864; Virginia 1863[1] War with Spain: Manila[1] World War II: Naples-Foggia (with arrowhead); Anzio (with arrowhead); Rome-Arno Southern France (with arrowhead); North Apennines; Ardennes-Alsace; Central Europe; Po Valley[1] Korean War: CCF Intervention; First UN Counteroffensive; CCF Spring Offensive; UN Summer-Fall Offensive; Second Korean Winter; Korea, Summer-Fall 1952; Third Korean Winter; Korea, Summer 1953[1] Southwest Asia: Defense of Saudi Arabia; Liberation and Defense of Kuwait; Cease-Fire[1] Or, on a chevron gules above an imperial Chinese dragon of the like armed azure three mullets argent, on a chief of the second two pallets of the fourth an arrow in fess counterchanged.

[16] Out of a mural crown or masoned gules a garland the dexter branch cactus the sinister palm proper encircling a sun in splendor argent.

The two white stripes on the scarlet chief, the colors of the campaign streamers for the War of 1812, commemorate the participation of several companies of the regiment.