List of attacks on the Ulster Defence Regiment

1971

• 9 August - a patrol from 6 UDR's Strabane company came under fire from the Provisional IRA using a Thompson sub-machine gun at a checkpoint near Clady Bridge border crossing, County Tyrone. Private Winston Donnell was killed instantly. He was the first UDR soldier to be killed in action.
• 8 December - the first Catholic UDR soldier to die, Private Sean Russell, is shot dead in his home in New Barnsley, Belfast by the IRA.

  1972

• 4 March - Captain Marcus McCausland, formerly of D Coy 5 UDR is abducted and killed by the Official Irish Republican Army. He was the first UDR officer to be killed.
• 21 September - a member of C Coy, 4 UDR and his wife are shot dead by the Provisional IRA as they watched TV at home near Derrylin.

  1974

• 10 April - Major George Saunderson, until the previous year second-in-command of 4 UDR, was killed in the kitchen of the school in Derrylin where he worked by gunmen who then crashed through a Garda checkpoint to escape into the Republic of Ireland.
• 2 May - attack at the Deanery base of C Coy, 6 UDR in Clogher. Opening fire using mortars then continuing with small arms and rockets, the estimated 40-man IRA team mounted a sustained attack lasting for 25 minutes against the small contingent in the base who reply with rifle fire, supported by Ferret armoured personnel carriers from the 1 Royal Tank Regiment. During the attack, Private Eva Martin is hit by a rocket fragment. She is the first woman UDR soldier to be killed. Sean O'Callaghan was later convicted of her murder after confessing.
• 28 October - a bomb attack at the joint 3 UDR and regular army barracks at Ballykinlar destroys the Sandes soldiers canteen on the base, killing two members of the Duke of Edinburgh's Royal Regiment.

  1991

• A mobile patrol from the 2nd Battalion was the subject of the first recorded use of the Mk12 horizontal mortar on 1 March 1991. Two soldiers were killed as a result of the attack. The funeral of one of them, Private Paul Sutcliffe, an Englishman, was held in Barrowford, Lancashire - the only UDR funeral to be held outside Northern Ireland. The second casualty, Private Roger Love, from Portadown died after three days. His kidneys were donated to the NHS.
• At 11:30 PM on the 31 May 1991 a driverless truck loaded with 2,000 lb of a new type of home made explosive was rolled down a hill at the rear of the barracks and crashed through the perimeter fence, coming to rest against a corner of the main building. Automatic fire was heard by witnesses just before the explosion. The blast left a deep crater and it could be heard over 30 miles away, as far as Dundalk. Three UDR soldiers – Paul Blakely, Robert Crozier, Sydney Hamilton – were killed and ten were wounded. Four civilians were also wounded. The Provisional IRA claimed responsibility two days later.