Smith's company was supporting the 2nd Battalion, 7th Infantry Regiment as it made its way through the Karbala Gap, across the Euphrates River and to Saddam International Airport (BIAP) in Baghdad. On April 4, 2003, a 100-man force was assigned to block the highway between Baghdad and the airport, about one mile east of the airport. After a brief battle, several of the Iraqis were captured. Smith spotted a walled enclosure nearby with a tower overlooking it. He and his squad set about building an impromptu enemy prisoner of war (EPW) holding area in the enclosure. Smith and 16 other men used an Armored Combat Earthmover (similar to a bulldozer) to knock a hole in the south wall of the courtyard. On the north side, there was a metal gate that Smith assigned several men to guard. These men noticed 50–100 Iraqi fighters who had taken positions in trenches just beyond the gate. He summoned a Bradley fighting vehicle to attack their position. Three nearby M113 Armored Personnel Carriers came to support the attack. An M113 was hit, possibly by a mortar, and all three crewmen were wounded. The Bradley, damaged and running low on ammunition, withdrew to reload during a lull in the battle. Smith organized the evacuation of the injured M113 crewmen. However, behind the courtyard was a military aid station crowded with 100 combat casualties. To protect it from being overrun, Smith chose to fight on rather than withdraw with the wounded.