Mangas Coloradas, Chief of the Gila River Apaches, fought Confederate soldiers throughout Arizona's rebellious period. The Arizona Guards, a force of Confederate militia, recruited in Traditional Arizona, were in action almost immediately after their induction into service on August 1, 1861.
In early August, a group of Arizonans, known as the Ake Party were traveling from the Tucson region to the western shores of the Rio Grande River near Mesilla. Most of whom had left their town of Tubac after the siege of their old presidio.
They had nearly made it to the river when they were ambushed by a force of Apache warriors, this engagement became known as the Battle of Cooke's Canyon in mid August. Word of the engagement and the plunder of hundreds of heads of livestock led to the Arizona Guards involvement in this Apache campaign.
As soon as Thomas J. Mastin, captain of the Arizona Guards, received the Ake Party’s distress call, he realized that a night time pursuit would likely lead to an ambush of the pursuers, Captain Mastin ordered the pursuit to begin the next morning. Mastin did not head for Cook Canyon, however, he had a hunch as to where the Apaches were headed with their stolen property. Instead, he ordered the his militia to proceed to the passes over the Florida Mountains, near the Mexican border. Mastin knew that the Apaches could not travel very fast with stolen livestock.
The Captain and thirty-five of his men arrived at the base of the mountains early the next day. There they settled themselves in the foothills and awaited the fleeing Apaches. Mastin’s hunch had paid off. The Arizona Guards occupied their new post in the Florida Mountains for only a short time when their pickets reported the approach of the native warriors.
The Arizonans charged the Apaches as they entered the pass, and a running fight ensued. The Apaches were routed, and much of the livestock was recaptured. As many as eight of the Apaches were killed, with no loss to the Confederate forces.
The Arizona Guards pursued the Apaches back to Cooke's Canyon, where they attempted to regroup. A small skirmish was fought with no casualties inflicted to either side. The Apaches retreated to their usual strongholds in northern Mexico.
Governor John R. Baylor heard of the Arizona Guard's victory in the Florida Mountains, however the success was overshadowed by two defeats at the hands of Mescalero Apaches within ten days of the Florida Mountains battle. These engagements occurred at and near Fort Davis, Texas so Baylor's men were not involved in the fighting. Captain Mastin would go on to lead the Arizona Guards to victory at the Battle of Pinos Altos, where he was mortally wounded.