Troops prepare to fire M12 GMC
M12 during demonstration at Aberdeen Proving Grounds 1943
155 mm Gun Motor Carriage M12
991st Field Artillery Batt troops manning M12s at Bildchen 1944
M12 attached 103rd Infantry Division near pillbox defenses in the Siegfried Line
M12 firing in Belgium 1944
M12 of the 11th Armored Division in action, Budesheim Germany 1945
M12 from 737th Tank Battalion, 5th Infantry Division Berdorf, Luxembourg 9 February 1945
155 mm Gun Motor Carriage M12 in action Aachen 1944
M12 was a U.S. self-propelled gun developed during the Second World War. Only 100 were built. It mounted a 155mm gun M1917, M1917A1 or M1918 M1, depending upon availability, a weapon derived from the nearly identical French 155mm GPF gun of WW1 vintage. The M12 was built on the chassis of the M3 Lee tank.