Original U.S. Army 1955 Pattern Short Sleeve Khaki Shirt. This pattern shirt was worn from the late 1950's until replaced by the simplified pattern in 1966 and worn throughout the Vietnam War by officers and NCO's. This shirt appears to have been worn by an officer as there are no traces of sleeve rank. 100% cotton and in pretty good condition with the exception of some stains on left sleeve, could use a clean-up. Size measures to about 42, so it will fit Medium - Large.