Tucson was the capital of the Confederate Territory of Arizona between February 20, 1862 when some 120 Texas Rebels took control of El Presidio San Agustin del Tucson, and late April when the 1,800-strong Union army of the California Volunteers entered this dusty, dirty little Mexican town without firing a shot.
During that short period, 50 miles NW of Tucson, an engagement was fought between a Union cavalry patrol and a party of Confederate pickets from Tucson.
Formerly, every year in March, dedicated men & women from all over would come together at Picacho Peak State Park to reenact The Battle of Picacho Peak. Lack of funding stopped this fun event . Perhaps one day, it will come back.