Some of the Abrams tanks rendered onscreen appear to US Marine markings. All of the M1A1 Abrams tanks at the actual Battle of 73 Easting are those of the US Army's 2nd Armored Cavalry Regiment.
The Abrams tank used by the U.S. Army during the Gulf War period was the M1A1, but the computer-generated model seen in the episode is that of an M1A2. This can be distinguished from an M1A1 with the cylindrical Commander's Independent Thermal Viewer on the right side of the tank turret.