The Special Forces Brigades are formed by nine SF battalions. The First Brigade has the 1st, 2nd and 3rd SF Battalions. The Second Brigade has the 5th, 6th, 7th and 8th Battalions, while the Third Brigade has the 4th Battalions, 9th Battalions and a Rapid Intervention Force group.
There is also another special forces unit called Batallones de Comandos Anfibios. These units carry out special tasks for the Amphibious Reaction Forces (Marines). They are known to train with their American counterparts: the Navy SEALs, at the Naval Special Warfare Center in Coronado, California.