My mother's father (we don't know much about) was similar. What we do know is he was extremely brave, courageous and was somewhat of a crazy warrior. He parachuted into France and killed many people, some even with his bare hands. Yuck! I don't like hearing about it. We only know a few stories.
Anyway, in civilian life, he was sadly a horrible alcoholic who cheated on my grandmother a lot. My mother was named Jacqueline after one of his French girlfriends. LOL How my grandmother could allow that, I'll never know. From what I know, he was a good man, just lacked some common sense marbles. He wasted his life away and died in a condemned house of Cirrhosis. I remember being a little girl and visiting him in a VA hospital.
My grandmother and mother cried and cried and cried when he died. I remember my grandmother saying, "I always loved him, I just couldn't live with him". :(
I often wonder how the “war demons” affected his life.