In the spring of 1862, about a dozen Union soldiers riding near Picacho Peak bumped into a group of about 10 Confederate soldiers. They skirmished briefly and parted ways. It was the only Civil War battle fought in Arizona.
Each year, hundreds gather in the desert to watch re-enactments of the Battle of Picacho Pass and the New Mexico battles of Glorieta and Val Verde. This year, the re-enactments will take place March 13 and 14 at Picacho Peak State Park.