Any family members who fought in ww2?

One grandfather was in the Air Force (I think) and was in Japan but didn't fight. My other grandfather was in the Army and was at Normandy on D-Day.

My father did. He was in the army in Europe. He had a brother in the navy who was killed when a German sub fired on his ship. Also, my father-in-law was in the navy in the Pacific.

both my grandfathers and various other relatives of that era

Sure...only great uncles, though.

Grandfather