my grandfather (who is alive, an incredibly tough guy but just recently became very fragile) and his younger brother fought side-by-side in WW2. the brother later emigrated to the US where he died several years ago, my grandfather stayed in budapest where my family's from.
my girlfriend's father, from an irish family in chicago, was aiming bombs - over budapest, of all places. go figure!
then there was my great-grandfather who just barely survived WW1, was dragged off the field with more shrapnel in his body than bones, stitched back together and retired from service. then when WW2 came he volunteered with a mechanised unit because he felt his place was with the boys who were fighting.
what a mess, but incredible people.