Capture of Tucson (1862)
| Part of the Trans-Mississippi Theater of the American Civil War | |
| Raising the Confederate flag in Tucson, March 1, 1862 | |
| Date | May 20, 1862 | 
|---|---|
| Location | Tucson, Arizona Territory, Confederate States (present-day Tucson, Arizona, United States) | 
| Coordinates | 32°13′18″N 110°55′35″W / 32.22167°N 110.92639°W | 
| Participants | Company B, 1st California Cavalry Regiment | 
| Outcome | Union occupation of Tucson, 1862-65 | 
| Casualties | |
| None | |
Union forces entered Tucson on May 20, 1862, with a force of 2,000 men without firing a shot.