Trans-Rocky Mountains Theater

The Trans-Rocky Mountain Theater was the scene of major military operations west of and around the Rocky Mountains.

Trans-Rocky Mountains Theater
DateSeptember 12, 1861 – May 26, 1865
Location
Western United States
Belligerents

 United States

 Confederate States

Commanders and leaders
Strength
  • 650,000
  • 350,000 (peak)
  • 475,000–500,000
  • 225,000 (peak)
Casualties and losses
32,500 dead, 153,855 wounded, 50,700 captured 45,000 dead, 180,000 wounded, 250,000 captured