Battle of Picacho Pass

The Battle of Picacho Pass or the Battle of Picacho Peak was an engagement of the American Civil War on April 15, 1862. The action occurred around Picacho Peak, 50 miles (80 km) northwest of Tucson, Arizona. It was fought between a Union cavalry patrol from California and a party of Confederate pickets from Tucson, and marks the westernmost battle of the American Civil War.

Question: was there a civil war battle in arizona
Answer: yes