Originally constituted and organized in the New York State Militia 13 May 1847. Served in the Civil War, Mexican Border Crisis and World War I but I'm not going to cover all that. 3d Battalion, 14th Infantry, New York National Guard (NGNY) was converted and redesignated 102d Antitank Battalion 1 September 1940. Activated 13 January 1941 at Hempstead, New York. Redesignated 102d Infantry Antitank Battalion 24 July 1941. Redesignated 802d Tank Destroyer Battalion 15 December 1941 at Camp Shelby, Mississippi. Overseas 7 April 1944. Trained in England April to June 1944.
Arrived in France 1 July 1944. Assigned to VIII Army Corps, the battalion was attached to 83d Infantry Division and remained so through 7 December. Attached to 4th Infantry Division 19 December 1944 to 27 January 1945. Attached to 80th Infantry Division 28 January to 3 February 1945. Attached to 95th Infantry Division 6 February to 21 April 1945.
Returned to the U. S. in November 1945. Inactivated 1 December 1945 at New York City. Redesignated 802d Tank Battalion, NGNY 27 September 1947. Reorganized and redesignated 101st Military Police Battalion, NGNY 15 December 1947.
Company A's location at any given point in time would depend on its assignment. Typically, a company of tank destroyers supported a battalion of infantry but this arrangement could - and very often did - vary. I assume you're attempting to follow an individual's movements across Europe. The only effective way to do this is to access the company's operational records covering the period 1 July 1944 to 8 May 1945 (to 28 November 1945 if you wish to follow the company's role in the occupation).