509th Armored Field Artillery

Brief History

• Constituted 5 July 1918 in the National Army as the 1st Battalion, 40th Field Artillery and assigned to the 14th Division
• Organized 10 August 1918 at Camp Custer, Michigan
• Demobilized 6 February 1919 at Camp Custer
• Reconstituted 1 October 1933 in the Regular Army
• Activated 4 June 1941 at camp Roberts, California
• Reorganized and redesignated 1 March 1943 as the 974th Field Artillery Battalion
• Inactivated 10 January 1946 at Camp Patrick Henry, Virginia
• Redesignated 5 February 1947 as the 509th Field Artillery battalion
• Redesignated 25 June 1948 as the 509th Armored Field Artillery Battalion
• Assigned 30 July 1948 to the 3d Armored Division and activated at Fort Knox, Kentucky
• Relieved 1 October 1957 from the 3d Armored Division and inactivated in Germany with all personnel and Equipment being transferred to the 2d Field Artillery Battalion, 73d Artillery
• Consolidated 16 September 1962 with the 40th Artillery

• 509th AFA Personal Diary
• 509th AFA Unit Rosters