The Battles of Frenchtown, also referred to as the River Raisin Massacre, was a 5-day series of conflicts in the then Michigan Territory that ended on this day in 1813. After an initital defeat on January 18, British forces and their Native American allies launched a successful counterattack against the Americans a few days later. The Americans lost 397 soldiers in this second battle, while 547 were taken prisoner. On January 23, dozens of wounded prisoners were murdered the next day in a massacre by the Native Americans. This was the deadliest conflict recorded on Michigan soil, and the casualties include the highest number of Americans killed in a single battle during the War of 1812.