Short answers, pulled from the story.
The battle was fought from the 18th to the 28th of April 1862 on the Mississippi River south of New Orleans. It was the decisive battle for possession of the city during the American Civil War.
Flag Officer David G. Farragut commanded the West Gulf Blockading Squadron, the main Union naval force. Commander David Dixon Porter led an attached flotilla of mortar schooners, and Benjamin F. Butler commanded the accompanying Union Army troops.
Fort Jackson and Fort St. Philip stand on the Mississippi River, about 40 kilometers above Head of Passes and roughly 120 kilometers downstream from New Orleans. Fort Jackson sits on the river's right bank and Fort St. Philip on the left.
The enlisted garrison at Fort Jackson mutinied on the night of the 29th of April 1862 after enduring constant flooding, shortages of food and clean water, and days of shelling they could not answer. Unable to keep fighting, Brigadier General Johnson K. Duncan surrendered both forts the following day.
The Union Navy lost one ship, Varuna, while passing the forts on the 24th of April 1862. The Confederate fleet lost twelve vessels in the same action.
Union forces occupied New Orleans starting on the 25th of April 1862, after Farragut's fleet passed the forts with no further serious opposition. The loss of the city was a serious blow to the Confederacy and may also have discouraged Great Britain and France from recognizing it diplomatically.