Location: East Baton Rouge Parish and East Feliciana Parish
Campaign: Siege of Port Hudson (1863)
Date(s): May 21-July 9, 1863
Principal Commanders: Maj. Gen. Nathaniel P. Banks [US]; Maj. Gen. Franklin Gardner [CS]
Forces Engaged: XIX Army Corps, Army of the Gulf [US]; Confederate forces, 3rd District, Department of Mississippi and East Louisiana, Port Hudson [CS]
Estimated Casualties: 12,208 total (US 5,000; CS 7,208)
Description: In cooperation with Maj. Gen. Ulysses S. Grants offensive against Vicksburg, Union Maj. Gen. Nathaniel P. Bankss army moved against the Confederate stronghold at Port Hudson on the Mississippi River. On May 27, after their frontal assaults were repulsed, the Federals settled into a siege which lasted for 48 days. Banks renewed his assaults on June 14 but the defenders successfully repelled them. On July 9, 1863, after hearing of the fall of Vicksburg, the Confederate garrison of Port Hudson surrendered, opening the Mississippi River to Union navigation from its source to New Orleans.
Result(s): Union victory