Hi. Unfortunately can not visit Kew or access NA as we live in Tasmania, Australia. During these traumatic times, I do not want to impinge on his sons arranging the funeral to find out his serial number, though that is the obvious first step. Like my father's army experiences, Joe never talked about the war, only that he had provided photos for the book. Maybe later we can find something of his war experience to pass on to his grandkids. If Joe signed up aged 16 say, then that makes it 1942, so still three more years of war. Many thanks for your help.