The Battle of Fort Dearborn was an engagement between United States troops and Potawatomi Native Americans that occurred on August 15, 1812, near Fort Dearborn in what is now Chicago, Illinois. The battle, which occurred during the War of 1812, followed the evacuation of the fort as ordered by the commander of the United States Army of the Northwest, William Hull. The battle lasted about 15 minutes and resulted in a complete victory for the Native Americans. After the battle, Fort Dearborn was burned down. Some of the soldiers and settlers who had been taken captive were later ransomed.