The attacks at Fort Blue Mounds were two separate incidents which occurred on June 6 and 20, 1832, as part of the Black Hawk War. In the first incident, area residents attributed the killing of a miner to a band of Ho-Chunk warriors, and concluded that more Ho-Chunk planned to join Black Hawk in his war against white settlers. The second incident occurred east of the fort as a Sauk raiding party, estimated by eyewitnesses to be as large as 100 warriors, attacked two militia men who were investigating noises heard the night before. Two members of the militia stationed at Blue Mounds were killed in the attack, and both their bodies were badly mutilated.