Adopted after the Korean War, the 1953 Marine Corps Utility Shirt was made from sage green herringbone twill (HBT) cotton.1 It had two patch pockets with V-cut flaps and an inner map compartment behind the left hand side patch pocket. The USMC's distinctive design also featured a covered three button front closure and button cuff sleeves. Replaced by the P56 sateen shirt, the P53 was very rarely worn in Vietnam.
1. Cataloging And Identification Guide For 20th Century Uniforms (Marine Corps Museum, 1987)