Port Hudson
From HistoryWiki
Wikipedia page about the Siege of Port Hudson
The Siege of Port Hudson, Louisiana (May 22 - July 9, 1863), was the final engagement in the Union campaign to liberate the Mississippi in the American Civil War.
While Union General Ulysses S. Grant was besieging Vicksburg upriver, General Nathaniel P. Banks was ordered to capture the Confederate stronghold of Port Hudson, in order to go to Grant's aid. When his assault failed, Banks settled into a 48-day siege, the longest ever on US soil. A second attack also failed, and it was only after the fall of Vicksburg that the Confederate commander, General Franklin Gardner surrendered the port. This left the Mississippi River open to Union navigation from its source to the Gulf of Mexico.
