Yeah, your dad probably doesn't really mean anything about it and, in fact, he probably gets a kick out of it when it annoys you. I think you should try talking to your mom about it and get her to talk to him. Explain to your mom how it really embarrasses you and it needs to stop.
The other thing you can do that might be helpful would be to make believe that it doesn't even bother you at all. That way, if he sees that he's not getting "under your skin," he will stop. :-).
You left out your Mom. Why isn't she in the picture? If she's not with the family anymore then you need to contact a priest or minister that specializes in family counseling.
If he's good, he'll schedule a meeting between the three of you and get things straightened out. And if your Mom and Dad are together, he should work to get that relationship back in order. You are right.
His comments to you and your friends are inappropriate and need to stop.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.