Because Jack Lucas jumped on not one but two grenades to save his friends.
And lived.
The true unsung heroes of Iwo Jima – the Navy Corpsmen – were called in on the spot, hauling the severely-fucked-up Lucas out of there on a stretcher while simultaneously using their .45 pistols to fight off a Japanese banzai counter-attack. They fought through the war zone, got Lucas to a hospital ship, and it took 21 surgeries for them to remove 250 pieces of shrapnel from every major organ in his body.
Seven months later, Jack Lucas personally walked up to Harry S. Truman and received his Medal of Honor in person. He'd already made a complete recovery.