I've never been to Europe but would love to go one day. One can only hope.
I too, love the war-history stuff. When a day comes by that and it is an momentous WW2 (in particular) date, i get excited because i know that I am going to learn some stuff as well.
You are in for a treat when you do go as there is just so much that has been turned into museums now. All of them are privately owned by the farmers and land owners and there is stuff everywhere. Every time I go there is more things added as farmers find more things. Loads of things were covered up and buried and they are now being dug up.