15. Bob Kalsu
Bob Kalsu was one of only two professional football players to die in the Vietnam War. After a successful rookie season for the Buffalo Bills, where he played as a guard, he enlisted in the military to meet his ROTC obligation. Kalsu was made a second lieutenant and was assigned to the 101st Airborne Division.

The Buffalo Bills Rookie of the Year took part in active combat. His unit came under heavy mortar fire at Fire Support Base Ripcord near the A Shau Valley and he died in action. Tragically, his wife found out about his death just hours after giving birth to their second child.