Mabry, Austin, Texas. An M7 which was used in the Austrian Bundesheer (Army) after World War II is in the private Robert Gill Collection in Austria. An M7 by the main entrance outside the barracks of West Virginia Army National Guard base Camp Dawson in Kingwood, West Virginia. Unrestored hulk in kibbutz Kineret, Israel. Displayed outdoors at the Third Infantry Division Museum at Fort Stewart, GA. Display outdoors at National Guard Armory, Savannah, Georgia Variants M7 The first M7s produced were based on modified M3 Lee medium tank chassis. To maintain a low silhouette, the howitzer elevation had to be restricted to 35°. In May 1942, after only a month of production, the vehicle was altered to increase its ammunition stowage from 57 to 69 rounds. This was achieved by placing seven rounds on the left wall and five on the right. The M7 also went through a fairly rapid shift from being based on the M3, to having more commonality with the M4 Sherman. The first major example was an adoption of the M4's three-piece housing, single-piece casting and suspension. In British service, some M7s carried a radio set, which took the place of 24 rounds of ammunition. M7B1 Completing the shift, the M7B1 was fully based on the M4A3 Sherman chassis. 826 M7B1 were produced from March 1944 to February 1945. M7B2 During the Korean War, the limited elevation of the howitzer became noticeably problematic. 127 M7B1 were modified to permit an elevation of 65° to increase the effective range of the howitzer. The machine gun mount also had to be raised to give a 360° firing arc. "Defrocked Priest" As one part of the Allied effort to capture Falaise and break out from the Normandy beachhead, 72 M7s had their main guns removed in the field for service as armoured personnel carriers and were first used in Operation Totalize. These field modified vehicles were referred to as "Defrocked Priests", "Unfrocked Priests" or as "Holy Rollers". The work was done in one week by 250 personnel from 14 British and Canadian Royal Electrical and Mechanical Engineer units. 36 vehicles each were allocated to the 4th Infantry Brigade of the 2nd Canadian Division and the 154th (Highland) Brigade of the 51st (Highland) Division, which led the attack. Kangaroo A Canadian armored personnel carrier conversion of the M7 for use by British and Commonwealth units in northern Europe. The Kangaroo