While protecting a railroad survey party in Montana, Custer and his 7th Cavalry clash for the first time with the local Lakota Native Americans, who will defeat them three years later at the Little Big Horn.
During the previous two years, Lieutenant Colonel George Armstrong Custer and his 7th Cavalry had not fought a single battle against the tribes of the western Plains. Hungry for action, Custer was pleased when the 7th Cavalry was ordered to help protect a party of surveyors laying out the route for the proposed Northern Pacific Railroad. The new transcontinental railroad (the third in the United States) was to pass through Sioux territory.
Initially, the military escort saw little action. The Lakota seemed to be avoiding or ignoring the survey party. For Custer, the mission turned into something of a lark. He spent much of his time shooting buffalo, antelope, elk and other animals. To find good hunting, he often led the 7th Cavalry far away from the survey party and the main body of the military escort.