what day, and location was he, when he was captured?
the dog tags might be traceable, but he wouldnt have gotten it til he was processed into the camp. do you know what camp he was in in england? i have some of the camp "newspapers", from camp 230, in england, '46 - 48 dated, mostly early ones i think.
that will give you a better idea as to who captured him. they were surrendering in droves, sometimes in the thousands at a time.
I am interested in buying / trading for photo albums, photo groupings, diaries, feldpost groupings,etc, from any country in the world, any army/navy, etc, mostly 20th century!!