I've always been fascinated by the WWII generation. I admire all those who served on either side to be honest. Although I whole heartedly never agreed with Hitler and his Nazi party. I was impressed by those who served their country nonetheless. My heritage is rooted in Germany the family's name back in the Fatherland was Heindrich (a number of generations back)...of course when the ancestors landed on Ellis Island the only similarity to the family name today is an "H" an "e" and and "n".
I suppose you could say, my family tree pulled me into the fascination with the iron tombs.
edit: one spark that helped out in my journey was the classic board game Axis and Allies. I won my first game versus my cousin by dominating the Atlantic!