James M. Treber, 24
Treber, who had recently married, died six weeks after arriving in Iraq for his first combat tour. He and two other soldiers drown when their vehicle crashed into a canal. One of Treber's last acts was to free another soldier from his seatbelt and give him his airpocket. "He knew there was not enough room for both of us to breathe," the lone surviving soldier to a military news service.
Sources: Times research, Defense Department, iCasualties.org