During 1988 the disposition of brigades in Northern Ireland changed: On 1 July 1988 3rd Infantry Brigade reformed at Armagh and became responsible for the UK-Ireland border zone from Armagh to South Londonderry. The brigade had been disbanded in September 1981 and its units and area initially been taken over by 8th Infantry Brigade. On 2 November 1988 107th (Ulster) Brigade (V) was raised and took command of all Territorial Army units in Northern Ireland, thus freeing 8th Infantry Brigade and 39th Infantry Brigade to focus on counterinsurgency operations. This structure was in force until the 1992 amalgamation of Royal Irish Rangers and Ulster Defence Regiment, after which 3rd Infantry Brigade returned to control its traditional area of County Armagh and County Down. The British Army of the Rhine (BAOR) was the United Kingdom's main contribution to NATO. Headquartered at JHQ Rheindahlen in West Germany and commanded by a General it consisted in peacetime of British I Corps and support troops. In the event of war with the Warsaw Pact the Commander-in-Chief of BAOR would have assumed command of NATO's Northern Army Group (NORTHAG), which was tasked with defending Northern Germany up to the river Elbe. BAOR was armed with tactical nuclear weapons and supported by Royal Air Force Germany. During transition to war, the support units of BAOR would have formed the British Rear Combat Zone headquartered in Düsseldorf, which would have supplied the fighting forces and guarded the lines of communication within West Germany. Further West in Belgium was the British Communications Zone, which was headquartered in Emblem, outside Antwerp and tasked with receiving reinforcements and supplies from Great Britain and to co-ordinate their onward movement to 1 (BR) Corps. On 27 November 1989 Peter Inge became the commander of NATO’s Northern Army Group and Commander-in-Chief, British Army of the Rhine in Germany with the local rank of general; he succeeded General Brian Kenny. The area 1 BR Corps had to defend lay between Hanover to the North and Kassel to the South and extended from the Inner German Border to the Upper Weser Valley. In case of a war the Corps first line of defense would have been a screening force of 1st The Queen's Dragoon Guards, 16th/5th Queen’s Royal Lancers and 664 Squadron AAC, which would have become an ad-hoc brigade formation under command of BAOR’s Brigadier Royal Armoured Corps.