By the time he was sent to Iraq as a scout platoon leader with the 1st Battalion (Airborne), 325th Infantry Regiment, Castro was already an experienced combat veteran. In 2006, Castro was assigned to the 1st Battalion (Airborne), 325th Infantry Regiment , 82d Airborne Division, which was in combat in Iraq at the time. In September 2006, Castro and his men had relieved other paratroopers atop a house in the town of Yusifiyah, some 20 miles southwest of Baghdad, after a night of fighting.
