Ever since the premiere of "Saving Private Ryan" in 1998, there's been a little bit of confusion around how and why the Army might want to pull one of its soldiers out of a combat zone, even if all of his many brothers were killed in combat.  During World War II, there were very few exemptions to the military draft. Most of the time, potential recruits were rejected for things like medical issues, having jobs critical to the war effort, or religious exemptions. It wasn't until after the war...