Cool photo! Was your dad American? Any thoughts on who blew it up? I could see either Germans - or probably Americans (with access to explosives, etc.).
My dad was in the Pacific, but along with his buddies thought a couple more nukes on the Soviets and then march in would have been the thing to do.
Not sure how diplomatic that would have been after they helped us whup the Germans! But sure would have prevented a lot of heartache down the road.