Who fought the british and won after the Treaty of Ghent was already signed?

After the Treaty of Ghent was signed in December 1814, which ended the War of 1812, the Battle of New Orleans occurred in January 1815. General Andrew Jackson led American forces to a decisive victory against the British, despite the treaty already being in effect. This battle was significant as it boosted American nationalism and Jackson's popularity, even though it technically took place after peace had been agreed upon.