The Battle of Fort Hindman, or the Battle of Arkansas Post, was fought from January 9 to January 11, 1863, near the mouth of the Arkansas River. Union boats began landing troops near Arkansas Post in the evening of January 9 and the troops started up river towards Fort Hindman. Sherman's corps overran Confederate trenches, and the enemy retreated to the protection of the fort and adjacent rifle-pits. Flag Officer David D. Porter, on January 10, moved his fleet towards Fort Hindman and bombarded it, withdrawing at dusk. Union artillery fired on the fort from positions across the river on January 11, effectively silencing most of the Confederate guns in the fort, and the infantry moved into position for an attack. Union ironclads commenced shelling the fort and Porter's fleet passed it to cut off any retreat. As a result of this envelopment, and the attack by McClernand's troops, the Confederate command surrendered in the afternoon, despite orders to Brig. Gen. Thomas J. Churchill that he must defend the fort at all costs.
Although Union losses were high, it did eliminate one more impediment to Union shipping on the Mississippi.