trained for combat and combat support operations in any terrain. Troopers wear black berets. The cavalry formations of the Army are under the supervision of the Cavalry Branch Center (). Field Artillery (ARM) () is the field artillery unit of the army. It also acts as a combat support similar to the cavalry unit. Its main function is to support ground combat mission for the Infantry Branch. Units of the Field Artillery use either towed or self propelled artillery guns and multiple rocket launchers. Brown berets are worn by its gunners. The Field Artillery units report under the Field Artillery Branch Center (). Air Defense Artillery (ARH) () are the anti-aircraft defense units of the army. Its main function to defend other ground units from an air attack and help to protect installations from destruction. They are equipped with both anti-air defense guns and short range air defense missile systems, either MANPADs or vehicle-mounted systems. Like the Field Artillery, Brown berets are worn by its gunners and missile crews. The Air Defense Artillery units report to the Air Defense Artillery Branch Center (). Four detachments of missile artillery units called Den Rudal () are part of the Air Defense Artillery. Support elements Military Engineering Corps (CZI) () - The Military Engineering Corps is specialty branch of the army whose primary function as a combat support, such as the construction of military bridges for vehicles to pass by or converting highways into temporary runways. Another function of this unit is to expand troop movements and narrowing enemy movements while assisting friendly units. The Military Engineers are also involved in relief operations in the aftermath of calamities and in building civil projects in the local communities. Engineers, regardless of rank, wear Grey berets or construction helmets in their uniforms. The unit is under the Directorate of Army Military Engineering. Ordnance Corps (CPL) () is a unit whose main function is the maintenance and testing of military ordnance. The unit is under the Directorate of Army Ordnance . Signal Corps (CHB) () is a unit whose main function to deliver and maintain the best possible information to combat units. The unit is under the Directorate of Army Signals. Army Aviation Corps (CPN) () - The army maintain its own small air arm that performs attack, liaison and transport duties. It operates 100 aircraft in five helicopter and aircraft squadrons composed mostly of light