M7 Priest Armor Walk Around No 17 Author:David Doyle 80 pages. 230 photographs, plus color profiles and detailed line drawings. The US M7 self-propelled 105mm Howitzer, known as the Priest, was originally developed on the basis of an M3 medium tank chassis. Nicknamed the Priest be cause of its pulpit-like anti-aircraft ring, the vehicle was intended to provide armored units with organic, highly-mo... more »biile artillery support.« less