Constituted 1 July 1916 in the Regular Army as Troops L and M, 19th Cavalry.  Organized 11 June 1917 at Fort Ethan Allen, Vermont.  Consolidated, converted, and redesignated 1 November 1917 as Battery F, 77th Field Artillery.  (77th Field Artillery assigned 19 November 1917 to the 4th Division.)  Inactivated 21 September 1921 at Camp Lewis, Washington.  (77th Field Artillery relieved 24 March 1923 from assignment to the 4th Division and assigned to the 7th Division; relieved 1 January 1930 from assignment to the 7th Division and assigned to the 4th Division.)  Activated 1 May 1939 at Fort D.A. Russell, Wyoming. (77th Field Artillery relieved 16 October 1939 from assignment to the 4th Division.)
Reorganized and redesignated 24 February 1944 as Battery C, 631st Field Artillery Battalion.  Inactivated 8 September 1945 in Italy.  Redesignated 4 November 1946 as Battery C, 85th Field Artillery Battalion.  Activated 1 July 1948 at Fort Riley, Kansas, as an element of the 10th Infantry Division.  Inactivated 1 July 1957 in Germany and relieved from assignment to the 10th Infantry division.