Battle of Cedar Creek
1876 CE.
Shown on the map at 47.515°, -106.278°.
The Battle of Cedar Creek (also called Big Dry Creek or Big Dry River) occurred on October 21, 1876, in the Montana Territory between the United States Army and a force of Lakota Sioux Native Americans during the Great Sioux War of 1876. The battle broke out after talks between Colonel Nelson A. Miles and Chief Sitting Bull broke down, and ended with the surrender of 400 Lakota lodges (with approximately 2,000 men, women, and children) to Miles six days later.
Text from the Wikipedia article Battle of Cedar Creek (1876), licensed CC BY-SA 4.0.