This is based on true events: "The Johnson County War, also known as the Wyoming Range War and the Powder River Conflict, was a cattle war that occurred from 1889 to 1893 in Johnson County, Wyoming. It started when cattle companies ruthlessly persecuted alleged rustlers—often settlers competing for land, livestock, and water rights. As violence escalated between large ranchers and smaller farmers, it culminated in the Powder River Country with the hired gunmen invading the county. The posse of 200 men led to a grueling standoff that ended when the United States Cavalry relieved the forces under President Benjamin Harrison."
Johnson County War
The three Hammett brothers find themselves embroiled in a fast-paced struggle, with traditional farmers pitted against newcomers who have moved into the verdant grasslands.