Comparing: M7 Priest vs. Sturmpanzer I Bison

Manufactured on the suspension of the M3 and M4 tanks from April 1942 through March 1945, with a total of 4,316 vehicles produced. The M7 Priest first saw combat at El Alamein.

Developed from 1939 through 1940 on the chassis of the Panzerkampfwagen I. Equipped with the 150 mm s.I.G. 33 gun that was mounted together with the gun carriage. Rate of fire was three rounds per minute; on-board ammunition totaled eight shells. The vehicle required the support of an ammunition carrier. The SPG was used from 1940 through 1943 during the French Campaign, Balkan Campaign, and on the Eastern Front. Later the Sturmpanzer II with a similar gun type was developed.