Sure your Dad was a good bloke GD, don't know the circumstances but many people throughout history have been forced to fight for something they don't believe in, people judge others too quickly, my Dad was too young to be involved and he and his family were forced to leave Hungary when the Russians invaded. They spent time in Austria, nearly starving to death, before eventually arriving in England, where he built himself a new life and worked hard every day till he passed away in 1999.
Remember being called a Nazi at school and having many a punch up with bullies, i am proud of my father and never thought of him as a foreigner or incomer, he was just a good, honest, decent bloke.