"This manual is published for the information of the using arms and services. In addition to a description of the 75-mm Howitzers M2 and M3, this manual contains technical information required for the identification, use, and care of the weapon, ammunition, and accessory equipment."--Page 1.

"This Technical Manual supersedes TM 9-318, 75-mm Howitzers M2 and M3 (Mounted in Combat Vehicles, dated 12 January 1944, and TB ORD 209, dated 5 October 1943, insofar as it applies to TM 9-318. TB ORD 209 remains in force until such time as it is incorporated in other affected manuals or specifically rescinded."--Title page.

Introduction --General -- Description and data -- Tools, parts, and accessories -- Operating instructions -- General -- Service upon receipt of equipment -- Controls -- Operation under usual conditions -- Operation under unusual conditions -- Demolition to prevent enemy use -- Maintenance instructions -- General -- Lubrication -- Preventive maintenance service -- Malfunctions and corrections -- Tube and breech ring assembly -- Breech mechanism -- Firing lock -- Cradle and recoil mechanism -- Firing mechanism -- Elevating mechanism -- Traversing mechanism -- Auxiliary equipment -- General -- Ammunition -- Sighting and fire control equipment -- Subcaliber equipment -- Appendix -- Shipment and storage -- References.