By early 1978, the British Army forces involved in
Operation Banner had recently replaced their ageing
Bell H-13 Sioux helicopters for the more versatile Aérospatiale Gazelles. The introduction of the new machines increased the area covered on a reconnaissance sortie as well as the improved time spent in airborne missions. In the same period, the
Provisional IRA received its first consignment of
M60 machine guns from the
Middle East, which were displayed by masked volunteers during a
Bloody Sunday commemoration in
Derry. Airborne operations were crucial for the British presence along
the border, especially in south
County Armagh, where the level of IRA activity meant that every supply and soldier had to be ferried in and out of their bases by helicopter since 1975. The
Royal Green Jackets had been in South Armagh since December 1977, and had already seen some action. Just a few days after arrival, two mortar rounds hit the C Company base at
Forkhill, injuring a number of soldiers. In the aftermath of the attack, two
Royal Ulster Constabulary (RUC) officers were wounded by a
booby-trap while recovering the lorry where the mortar tubes were mounted. Two days later, a patrol near the border suffered a bomb and gun attack, leaving the commanding sergeant with severe head wounds. The sergeant was picked up from the scene by helicopter. He was later invalided from the British Army as a result of his injuries. ==Shooting and crash==