The deadliest slaughter of Native Americans in U.S. history was largely forgotten.

The deadliest slaughter of Native Americans in U.S. history was largely forgotten.
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In short: While Wounded Knee is etched into the American psyche, the Bear River Massacre was arguably more lethal. In 1863, a volunteer force turned a tactical engagement into a slaughter of nearly 300 people. It remains a haunting example of how history can be obscured by the noise of larger conflicts.

On January 29, 1863, Colonel Patrick Edward Connor led nearly 300 California Volunteers against a Shoshoni winter camp on the Bear River in present-day Idaho. The Shoshoni, facing dwindling food sources and land loss due to westward expansion, had resorted to theft for survival. This led to years of escalating tension, culminating in a military expedition that Connor intended to 'chastise' the tribe for their role in past raids on emigrant routes.

The engagement began as a tactical battle. Shoshoni warriors, including those under Chief Bear Hunter, utilized a dry ravine shielded by twelve-foot embankments with built-in firing steps. While some of Connor's troops struggled to ford the ice-choked river, Major McGarry launched a repulsed frontal attack. Connor then shifted to a flanking maneuver, sealing off the ravine's exits and pouring enfilading fire into the lodges. The fighting lasted over four hours, eventually devolving into a massacre where the 'cry for quarters' fell on deaf ears.

The death toll is estimated between 250 and 500 Shoshoni men, women, and children, making it potentially the deadliest single slaughter of Native Americans in U.S. history—surpassing the well-known massacres at Sand Creek and Wounded Knee. Despite the carnage, the event faded from public memory, largely because it occurred during the height of the American Civil War. Recent historical research, including a 1997 discovery of a participant's map and narrative, has begun to clarify the specific movements and brutal mechanics of the slaughter.

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