The Battle of the Red River was a major battle in the U.S. Southern Plains Campaign of the Human-Covenant War. The name battle of the Red River actually refers to two engagements separated by about 130 kilometers, though both along the Red River marking the boundary between Oklahoma and Texas. In both engagements, the UNSC ground forces attacked from the north as part of counterattack after the Battle of Fort Sill, supported by air and artillery elements. The western unit attacked south from Fort Sill, crossing the river on I44 near Burkburnett, Texas, while the eastern unit advanced south from Oklahoma City and crossed on I-35 north of Gainesville, Texas. The two-pronged attack was coordinated by General Payton Smith.