Today, in 1815, the Battle of New Orleans was won.
… Although United States and British commissioners met in Ghent, Belgium, on December 24 to sign a peace treaty to end the War of 1812, the battle raged on around New Orleans. A major American victory came on New Year’s Day, with British casualties outnumbering those on the United States side by more than two to one.
Finally, on January 8, the day commemorated today as the victory day in the Battle of New Orleans, two British generals, including Major General Pakenham, were killed in battle, with a third severely wounded. Soldiers described battlefield action as confused and haphazard in the dark hours of that foggy morning. Britain suffered over 2,000 casualties in that decisive battle, whereas Jackson lost only 71 men. The British forces withdrew through Lake Borgne and into the Gulf, firing on Fort St. Philip for over a week before sailing out to sea for good.