Fire Force or Fireforce is a variant of the military tactic of vertical envelopment of a target by helicopter-borne and parachute infantry developed by the Rhodesian Security Forces during the Rhodesian Bush War. Regiments involved included the Rhodesian Light Infantry or RLI, the Rhodesian African Rifles and the Rhodesian Special Air Service or SAS assisted by the Rhodesian Air Force. The Fire Force counterinsurgency missions were designed to trap and eliminate Zimbabwe African National Liberation Army and Zimbabwe People's Revolutionary Army insurgents before they could flee.