The Battle of Beaver Dams, which occurred on June 24, 1813, during the War of 1812, was a significant engagement where a column of United States Army troops attempted to surprise a British outpost at Beaver Dams in present-day Ontario, Canada. The American force, led by Colonel Charles Boerstler, had advanced from Fort George with the intention of attacking the British outpost at DeCou's house. However, their plans were thwarted when Laura Secord, a resident of Queenston, learned of the American intentions from officers billeted at her house. She embarked on a perilous journey to warn the British.

As the American troops proceeded toward DeCou's, they were ambushed by a combined force of Kahnawake and other Native American warriors, as well as British regulars, all under the command of Lieutenant James FitzGibbon. The Native American warriors were primarily Mohawks and played a significant role in the ambush. After encountering fierce resistance and facing the threat of being surrounded, Colonel Boerstler was wounded, and the American force eventually surrendered to Lieutenant FitzGibbon.

The casualties for the battle included around 25 Americans killed and 50 wounded, mostly among the prisoners. On the British and Native American side, reports vary, with estimates of around five chiefs and warriors killed and 20 wounded. The outcome of the Battle of Beaver Dams significantly demoralized the American force at Fort George, and they became hesitant to venture far from the fort. This engagement, along with subsequent events, contributed to a period of British dominance in the region during the War of 1812. Laura Secord's courageous journey to warn the British has also become a celebrated part of Canadian history.