"This 1952 manual is published for the information and guidance of personnel responsible for field and depot maintenance of fuze setters M13, M13A1, M18, and M18A1."
Gun mechanics : 155-mm. howitzer, prepared under the direction of the commanding general, Field Artillery Replacement Training Center, Fort Sill, Oklahoma : lessons, questions and answers ..
"For some years past all ordnance manufactured for the Service have been of steel and breech loading. These modern ordnance, as they are termed, differ considerably from the wrought-iron and stell muzzle-loading pieces which, as regards...