For many years the standard RAF anti-armour weapon was the "60lb" RP-3, the Second World War-era air-to-ground rocket used by British aircraft such as the Hawker Typhoons of the Second Tactical Air Force. These were still being widely used in the 1960s, especially during the Aden Emergency in battles between Yemen and Radforce in what was then the Aden Protectorate where Hawker Hunters fired a total of 2,508 RP-3 over 642 sorties. With the British withdrawal in November 1967, the Hunters moved to Bahrain and the RP-3 was retired after decades of service.