I don't.It's enough for us to know that he served in France,Belgium,Holland and Germany.He was back in France near the end of his tour when the building he was in took a shell.He was trapped and dug out.There is a really good reason he doesn't talk about it.
I guess he was too stubborn to die, or maybe he's just so god damn lucky.
I would love to hear his war stories though. Hopefully he doesn't keep his experiences till the end