Sand Creek Massacre Targets Cheyenne and Arapaho Camp

Context

By the mid-nineteenth century, the 1851 Treaty of Fort Laramie had attempted to set aside defined territories for Plains tribes including the Cheyenne and Arapaho, yet rapid American settlement, the Colorado gold rush, and the Civil War eroded those boundaries and intensified competition for resources. Hunting grounds shrank as wagon trains and miners crossed traditional lands, while federal troops were stretched thin by the war in the East. Colorado Territorial Governor John Evans pursued policies aimed at concentrating Native groups near military posts, issuing a proclamation that directed friendly Cheyenne and Arapaho to Fort Lyon for safety and supplies.

Major Edward Wynkoop at Fort Lyon worked to maintain fragile peace talks with Southern Cheyenne leader Black Kettle, who had traveled to Denver’s Camp Weld council seeking assurances. Black Kettle and other chiefs received mixed signals from territorial officials and military commanders, including Colonel John Chivington, who held dual roles as a militia leader and Methodist minister. The camp near Big Sandy Creek, about forty miles north of Fort Lyon, housed several hundred people—primarily women, children, and elders—under the impression they remained under government protection while broader negotiations continued.

What Happened

On November 28, 1864, Chivington arrived at Fort Lyon with elements of the 1st and 3rd Colorado Volunteer regiments and assumed command. The following morning his combined force of approximately 700 men marched to the Sand Creek village. As the troops approached shortly after dawn, Black Kettle raised an American flag that had been given to him earlier by U.S. officials, along with a white flag of truce, on a lodgepole. A delegation of chiefs moved forward to meet the soldiers.

Chivington’s men opened fire around 6:30 a.m., sweeping through the lodges and driving survivors toward the creek banks. The assault continued for roughly eight hours. Captain Silas Soule and Lieutenant Joseph Cramer, commanding companies of the 1st Colorado, refused to order their men to shoot and held their fire; other units pressed the attack. Black Kettle escaped, though many of his people, including prominent chiefs such as White Antelope, did not. When the firing ceased, soldiers moved among the dead before the column returned to Denver.

Aftermath

Initial reports in Colorado portrayed the action as a successful battle against hostile warriors. Within weeks, however, letters from Soule and Cramer detailing the refusal to participate and the character of the victims reached military and congressional authorities. A joint congressional committee and a military commission investigated in 1865, concluding that the camp had been peaceful and condemning the attack as a massacre. Chivington resigned his commission without facing court-martial; Governor Evans was removed from office.

Legacy

The Sand Creek Massacre deepened distrust between Plains tribes and the United States, contributing to renewed resistance during the Colorado War and subsequent conflicts. It exposed the gap between treaty promises and military practice, becoming a lasting symbol of the violent displacement of Indigenous peoples. In the twentieth century the site was preserved and designated the Sand Creek Massacre National Historic Site, administered by the National Park Service, where descendants of the Cheyenne and Arapaho continue to shape public remembrance and education.

The event also highlighted individual moral choices amid collective violence, as the testimony of dissenting soldiers helped bring the facts to light and influenced later historical assessments.