I know at least two and the nameplate, or dog tag as you say they were called, to his name, were from the regiments my 2x ggf served in in WW1, so fairly sure they were his.
shanreagh, I was thinking that they couldn't all be from family as there is a mix of an awful lot of different regiments etc., especially if, I don't know if I have said this in this topic, but my 2x ggf (whose these are supposed to have belonged to) had a son, who was also in WW2, but I think he was some kind of cook in the Army, so I don't know if he would have had badges and the like.
(as I assume men were still swapping badges in WW2)
I hope I have explained clearly, not sure I have, and thank you
