11th Battalion , Ulster Defence Regiment The 11th ( Craigavon ) Battalion , Ulster Defence Regiment was formed from companies of the 2nd Battalion Ulster Defence Regiment ( 2 UDR ) and the 3rd Battalion Ulster Defence Regiment in 1972 . In 1991 under the reductions planned in Options for Change by the British Army , it again amalgamated with 2 UDR to form the 2nd / 11th Battalion Ulster Defence Regiment . Formation . The battalion was formed in 1972 after an announcement by Major General Robert Ford , Commander Land Forces in Northern Ireland ( CLFNI ) . The raising of the new and final battalion of the UDR brought operational strength up to 9 , 000 men , making the regiment not only the youngest , but largest infantry battalion in the British Army . The new battalion was commanded by Lieutenant Colonel Robin Chappell , who had previously been commander of the neighbouring 2 UDR , the first regular officer to command the 2nd battalion , and was the only regular officer ever to command two separate UDR battalions . In 1990 11 UDR was reported as having 772 members who patrolled an area of 1 , 500 square kilometres . Uniform , armament & equipment . See : Ulster Defence Regiment Uniform , armament & equipment Barracks . From formation battalion HQ was based at Mahon Road Barracks , known by the troops as " Fort Mahon " , a new purpose built UDR base on the Mahon Road , Portadown beside the historic Mahon House . Assuming command and expanding platoons and companies once part of the Armagh - based 2 UDR in Lurgan , Portadown and Tandragee and also the Banbridge Company of 3 UDR . Companies . HQ Company . Mahon Barracks , Portadown . - a mixture of regular army and permanent cadre / part - time administration staff , instructors , watchkeepers , mechanics and a guard force of Conrate soldiers . The commander was the battalion commander who was a regular Lieutenant Colonel . Other regular soldiers on attachment included the adjutant ( a major ) , a Training Major and permanent staff instructors . The Quartermaster ' s stores were also part of this company as were the core services of the battalion which , although modified slightly on expansion , generally consisted of operational organisation , vehicles , radio services , catering and pay . HQ Company ( Operations Platoon ) . Scarva Road Barracks , Banbridge - an experimental permanent cadre platoon formed after Ulsterisation which carried out the same duties as the regular army . Selected from the youngest and fittest soldiers with Commanders and NCO ' s who had , where possible , previous military experience . The commander was a Scottish WO2 who had 22 years experience with the Royal Highland Fusiliers , fighting in colonial conflicts during the disestablishment of empire . His second in command was a Colour Sergeant who had fought in the Congo Crisis and in Cyprus . Main duties were to quickly seal off the A1 Belfast - Dublin dual carriageway and to act as Quick Reaction Force ( QRF ) for 3 Infantry Brigade and RUC J Division . As the number of permanent cadre soldiers grew a new full - time company was formed at Portadown and the Operations Platoon was integrated into it taking the designation A Company . A Coy ( Tandragee ) . Based at Mahon Barracks - a part - time company . Later renamed B Company . Drawn from men ( and later women ) from the village of Tandragee and surrounding area this company came on duty at 7pm on weekdays and all day on weekends . In addition to patrolling their own villages and rural areas they were also responsible for the relief of the regular army on the permanent guard post at Tandragee Power Station . B Coy . ( Dromore ) was never formed but the designation was later given to A ( Tandragee ) Coy when the full - time rifle company was established at Portadown from the Operations Platoon and designated " A Company " . C Coy ( Lurgan ) . Kitchen Hill Barracks , Lurgan . - a part - time company with a small permanent cadre staff who ran the UDR centre within the regular army ' s barracks . This company was responsible for patrolling the town of Lurgan and its surrounding villages and rural areas . Arms raid . Subsequent to a raid against C Company , on 20 October 1972 , the guard commander Sgt Billy Hanna MM was convicted of supplying information to loyalist paramilitaries . Most were recovered in follow up operations but some were later proven to have been used by loyalist organisations to carry out crime , including murders . D Coy ( Banbridge ) . Scarva Road Barracks , Banbridge - a part - time company with a small permanent cadre staff who administered and guarded the barracks . Drawing its recruits from Banbridge , Dromore and surrounding rural villages and areas the company also patrolled these areas and provided extra checkpoints on the A1 dual carriageway . E Coy ( Portadown ) . A part - time company with a small nucleus of permanent cadre administrative staff drawn from the market town of Portadown and its surrounding villages and rural areas . The company provided patrols in the town and surrounding areas as well as the night guard on the telephone exchange at Edenderry . F Coy ( Lisburn ) . After the amalgamation of 1 and 9 UDR in 1984 - a part - time company with a small nucleus of permanent cadre administration staff who ran the company offices and facilities within Thiepval Barracks . Recruiting from Lisburn and surrounding areas it too had a mixed patrol area of towns and villages but by its location also patrolled areas of south Belfast . Area of responsibility . RUC J Division - taking in the sub - divisions of : Both part - time and full - time companies of 11 UDR took over operational responsibility in other areas to relieve the pressure on border battalions who had taken heavy casualties , particularly 2 UDR . Part - time soldiers deployed for a weekend but the full - time Operations Platoon ( later A Company ) and elements of HQ Company Conrate Guard deployed for up to two weeks at a time . Some of these detachments were at : As well as manning permanent vehicle checkpoints ( PVCPs ) at these location the 11 UDR Platoons also engaged in urban and rural patrol work with the full - time soldiers taking part in searches , observation activities and denial of territory to the enemy . Casualties . The battalion lost nine men during its existence . A further eight were killed as a result of their membership after they had left the battalion . No figures are available for those wounded . The Miami killings . Two soldiers from the 11 UDR ' s C Company , ( also UVF members ) , were convicted of the 1975 killing of three musicians from the Irish showband , the Miami . This attack was led by Robin Jackson , a former ii UDR soldier who had been discharged for " undisclosed reasons " . Two soldiers from 11 UDR ' s E Company , Portadown ( also UVF members ) , died in the premature explosion of their own bomb . More detailed information can be read at : Miami Showband killings .