This is a WWI model 1918 tunic. This style tunic has hidden pockets rather than the patch pocket style and is identical to the British style with the exception of having a full cotten liner. It also has a single row of stitching 1 inch up from end of cuff.These went into production in August 1918. The vet was a tank driver as designated by the bullion tank under the French made shoulder patch. He had 12 months overseas duty and was wounded once as designated by the bullion wire chevrons on both sleeves.