1st pattern in-country made fatique shirt with 63rd infantry wartime patch(63rd infantry were a artillery division that were re-introduced during the vietnam war for a short period),the shirt has major collar dogs and artillery collar dogs,due to the early buttons on this shirt namely WW2 41 pattern HBT shirt buttons i would say the owner served during WW2 and progressed to the rank of Major at the start of the Vietnam war,the shirt is in excellent condition is about a 38 chest