(April 24–25, 1862), naval action by Union forces seeking to capture the city during the American Civil War. A Union naval squadron of 43 ships under Admiral David G. Farragut (Farragut, David) entered the lower Mississippi near New Orleans and soon breached the heavy chain cables that were stretched across the river as a prime defense. Realizing that resistance was useless, Confederate General Mansfield Lovell withdrew his 3,000 troops northward, and the city fell on April 25. On May 1 General B.F. Butler (Butler, Benjamin F) led 15,000 Union troops into the city to take command for the remainder of the war. The permanent loss of New Orleans was considered one of the worst disasters suffered by the Confederacy in the western theatre of the war.

(Jan. 8, 1815), U.S. victory against Great Britain in the War of 1812. In the autumn of 1814 a British fleet of more than 50 ships commanded by General Edward Pakenham sailed into the Gulf of Mexico and prepared to attack New Orleans, which is strategically located at the mouth of the Mississippi River. On December 1 General Andrew Jackson (Jackson, Andrew), commander of the U.S. Army of the Southwest, hastened to the defense of the city. Jackson's army of between 6,000 and 7,000 troops consisted chiefly of militiamen and volunteers from southern states. Because of slow communications, news of the peace treaty between Britain and the United States that had been signed at Ghent (Dec. 24, 1814) did not reach the United States in time to avert the battle, in which Jackson's troops fought against 7,500 British regulars who stormed their position on Jan. 8, 1815. So effective were the earthworks and the barricades of cotton bales with which the Americans had fortified their position that the fighting lasted only half an hour, ending in a decisive U.S. victory and a British withdrawal. British casualties numbered more than 2,000 (289 killed); American, only 71 (31 killed). News of the victory reached Washington, D.C., at the same time as that of the Treaty of Ghent and did much to raise the low morale of the capital. The Battle of New Orleans greatly enhanced the reputation of Jackson as a national hero.