Check the listing for details. WWI BRITISH PRE-WAR COMBAT FIELD GREYBACK SHIRT-SMALL 38R. Condition: New. Listed at 95.96 USD. First World war greyback shirt issued from 1860 and were still worn by soldiers in the of the Great war in 1914/15. Shirt features turn back cuffs. MUSEUM GRADE. collar stud required for top buttonhole.