 The Philippine Marine Corps is organized into three maneuver brigades, a Combat Service and Support Brigade (CSSB), and independent units such as the Marine Special Operations Group (MARSOG) and the Marine Security and Escort Group (MSEG).The three maneuver brigades provide administrative and logistical support to the units assigned to them, while the CSSB acts as a training and administrative command for the Field Artillery (FABN) and Assault Armor (AABN) battalions.In addition, a number of Reserve Brigades are under the control of the Naval Reserve Command.