US Army 1960s1970s Uniforms
OG507 cotton/polyester durable press (wash and wear) fabric, spec dated 25 Aug 1975 for the shirt and 10 Oct 1975 for the trousers. Nomenclature: "Shirt, Utility, Durable Press OG507" and "Trousers, Utility, Durable Press OG507" M1951 Wool Field Uniform: OG108 field shirts and trousers made of wool/nylon blend, to be worn under the field jacket (or parka) and trouser .