Adolf Hitler is a World War I veteran and the main antagonist of the second world war he is response for the holocaust Action T4 etc. He is one of the worst tyrants in history other than Joseph Stalin and Kim Jong Un.
Hitler does not make a appearence but is mentioned at the end of Brothers In Arms Road To Hill 30 by Greg Hassay.
He died on April 30th 1945 more information about Hitler can be founded here.
One of Dr Morale medical records says that Hitler had homosexual genetics which possible resulted of him having (if this kinda defect happens to others beside Hitler) one testicle including a pee hole on the side of his penis which i find odd.