The Battle of River Raisin marked the culmination of the American campaign to take Fort Detroit and invade Canada in late 1812 and early 1813. On January 22, American forces under James Winchester faced an invading British army under Henry Procter at Frenchtown. Winchester ultimately surrendered, but after the battle, the Native American allies of the British massacred the wounded American soldiers under their care.These event horrified Americans and "Remember the Raisin" became a rallying cry among soldiers for the remainder of the conflict.