"This 1954 manual is a guide to assist commanders in developing the sections of 8 inch gun M1 and 240-mm howitzer M1 firing batteries into efficient, smooth-working teams that have a sense of discipline that will impel them to operate effectively...
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 ..