My great-grandfather was drafted during WW1 in the US Army, didnt see any combat, never knew him so..
My grandfather was in the US Army, I think 37th infantry, and served in the Pacific theatre of war, in the solomon islands I believe.. he doesnt talk about it at all.. but received a few accolades and a purple heart.
My Uncle also served 2 tours in Afghanistan with the US Army 1st Bat, 28th Infantry Regiment (came back in 2010).
And his son (my cousin) currently deployed there with the 4th Infantry in Jan 2011.
As for me. I have no cause to join the military so probably will never in my life (unless drafted)