A major misconception about the Battle of New Orleans after it occurred was that it ended the War of 1812.

A common misunderstanding regarding the Battle of New Orleans is that it marked the end of the War of 1812. Although the battle, which occurred on January 8, 1815, was a notable American victory, it took place after the Treaty of Ghent had been signed on December 24, 1814. Due to the slow communication methods of the era, many people mistakenly believed that the battle itself had resolved the conflict. This misconception fueled the perception of a significant American triumph over Britain, bolstering national pride and unity in the aftermath of the war, even though the war had officially concluded before the battle took place.