The Confederate Government had early taken possession of the forts and had put them in complete order. When Farragut’s fleet appeared, early in the spring of 1862, Fort Jackson with its water battery mounted 75 guns and Fort St. Philip about 40. The works were garrisoned by about 1500 men, commanded by Brigadier General J. K. Duncan; St. Philip being under the direct command of Lieutenant-Colonel Edward Higgins. Just above the forts the Confederates had placed a fleet of 15 vessels, including the iron-clad ram _Manassas_. Below Fort Jackson they had obstructed the river with a heavy chain brought from Pensacola. This chain was pinned to the under side of a row of cypress logs which were 30 feet long and four or five feet in diameter. The spring freshets caused this chain to break and it was replaced by two lighter chains supported in similar fashion.
As a first move against the Confederate strongholds, Farragut sent Commander Porter with his fleet of mortar vessels to bombard the forts. The bombardment opened on the 18th of April and continued without remission for six days, but though breaches were made in the walls and the levee was broken at one place so that the beleaguered men had a difficult task to keep the waters of the Mississippi from drowning them out, the action was inconclusive.
It was then that Farragut determined upon the bold move (later duplicated at Mobile) which was so great an element of his fame. At two o’clock on the morning of April 24, 1862, he set his fleet in motion up the river. The chain barriers were cut and the fleet contrived to get past the fort without serious damage or loss of life. Thus was accomplished the feat of passing, with wooden vessels in a stream half a mile wide, two forts specially prepared to resist such an effort. The Confederate fleet was met beyond the forts and repulsed after a sharp engagement.
Farragut now passed on to New Orleans to make sure of the rich prize of a city whose export business at that time was the greatest in the world, while Porter was left behind with a sufficient squadron to continue the bombardment of the forts. After being under continuous fire until the 28th of the month the forts surrendered, and have never since been in active service.