 The main strength of the regiment lies in its three RAPAS companies (RAPAS meaning Airborne Reconnaissance and Special Action) each specialised in a specific field such as HAHO/HALO, Counter-Terrorism, amphibious, jungle, mountain or motorized patrols operations and its RAPAS Signal company dedicated to the C3 (Command, Control and Communications) support of Special Operations.The 1er RPIMa also fields a Training and Operations company tasked with providing selection, basic and continuation training of the unit's manpower and a Logistics company which supports the regiment in its daily and operational missions.Due to its long history with the British Special Air Service much of the 1er RPIMa core aspects are based upon the British SAS.