Pit 3 discovered just one month after Pit 2 lies 25 meters to the north of Pit 1. Measuring 28.8 meters (94.5 feet) from east to west, 24.6 meters (81 feet) from north to south, the pit covers an area of 50 square meters (60 square yards). This forms the headquarters of the garrison, exercising military control over men contained in the other two pits. Sixty-eight terra cotta figurines, four chariot horses and a wooden chariot were found here.

The layout is a concave covering about 520 square meters (624 square yards) A sloping entrance, 11.2 meters (37 feet) long, 3.7 meters (12 feet) wide leads into a chariot and horse stable with wings forming a room to each side. These contained sixty-four pottery figurines. Unlike the terra cotta figures unearthed in the other two pits, those in Pit 3 are stand along the walls seemly serving as a guard of honor. These men carried unique weapon called a "Shu". Sacrificial offerings unearthed indicate religious ritual and prayers for a victorious army.