I too have a father that served during WWII although in the Merchant Marines, and he served in three theaters of action, Pacific, North Atlantic, and Africa. Not a small feat.
He like most of those from that era doesn't talk about it, but during the holidays he opened up just a little (after years of prompting from my brothers and I) in front of my 23 y/o son, after which I told him he needs to record his life history (for the 1000th time) in some fashion so my son's children now of him, before he passes on.