Did he talk to you about it?
My grandfather, well, he only was a drafted soldier briefly,
basically the location where they were supposed to organize themselves was overrun before any of them even got there during the Blitzkrieg advances in the early days.
He was captured, sent (marched) to Stalag XIIIa where he was POW for 3 to 4 months.
After that he was sent home again, and later ordered to Hamburg as a forced laborer in some kind of chemical factory (special paint coatings, we think for V2)..
So he never saw real combat, i don't know if he actually had PTSD..
But for the rest of his life he never wasted any bit of food, never threw away a single screw he could re-use...
He never said much about his experience in captivity... I presume they endured allied bombing in Hamburg and i can't imagine what that must have been like.
But he never really talked about it much... He passed away 6 years ago..
In his final years he became more at ease with things.. but i wasn't around i was abroad.. much to my regret...
So now , i've been looking up info on where he was during the war, planning to visit Hamburg, i've heard that the place where he worked still existed 15 years ago, now trying to find out if it still does exist...