Check the listing for details. 1027p WW2 US Army & Air Force Chevron PFC Private First Class Khaki pair R1A. Condition: New. Listed at 9.00 USD. First introduced in 1936 for khaki uniforms. Khaki chevrons were designed to be used on all Khaki shirts, service jackets, etc. Officially replaced by the "Silver Gray" on dark blue chevrons. REPRODUCTION pair of WW 2 US Army & Army Air Force Rank Chevrons (Khaki).