1. Battle of the Rosebud: On August 22, 1876, one of the largest battles between the U.S. Army and Native American forces occurred near the Rosebud Creek in southeastern Montana. Led by Sioux chief Crazy Horse, a coalition of Lakota, Cheyenne, and Arapaho warriors fought against General Crook's forces, resulting in a stalemate.

2. Montana Statehood Day: August 22 is a significant date in Montana's history as it marks the day the state was admitted to the Union in 1889. President Benjamin Harrison signed the statehood proclamation, making Montana the 41st state in the United States.

3. Homestake Mine Strike: In 1908, Montana's Homestake Mine experienced a major strike led by the Western Federation of Miners. The workers demanded better wages and working conditions, and the strike resulted in a violent confrontation between the strikers and the mine owners. The strike ended in 1910 with minimal gains for the workers.

4. Butte's Anselmo Mine Disaster: On August 22, 1917, an underground explosion occurred in Butte's Anselmo Mine, killing 168 miners. The disaster was one of the deadliest in Montana's mining history, and it prompted the state to pass new safety laws, including mandatory inspections and higher safety requirements.

5. Sula Peak Fire: In 2000, the Sula Peak Fire burned through more than 18,000 acres of national forest land near Darby, Montana. The fire was sparked by a lightning strike and spread quickly due to high winds and dry conditions. Over 300 firefighters were deployed to contain the blaze, and it was finally extinguished in early September.