 Carleton's troops later fought the Battle of Apache Pass, during which they were ambushed by Apache warriors led by Cochise and Mangas Coloradas in Arizona's Chiricahua Mountains.Even though the column withstood the Apache attack and subsequently established Fort Bowie to secure the pass, the Californians and the Apache would continue fighting throughout the war and beyond.The Confederate Arizona Territory, which split off from the rest of the New Mexico Territory in 1861, was the first U.S. incarnation of Arizona, which would come into existence as Arizona Territory in 1863.