The first Ulster Workers' Council strike took place between 15–28 May 1974. This is arguably the greatest test of integrity and loyalty the UDR had to endure, along with the RUC. The regiment was not called out but 3 (Co Down) UDR, then at annual camp in Magilligan was deployed on Sunday 19 May by road and air to the south Tyrone and south Fermanagh areas usually patrolled by 4 (Co Fermanagh) UDR and 6 (Co Tyrone) UDR. Two days previously on 17 May loyalist paramilitaries had carried out a series of bombings in Dublin and Monaghan. The authorities believed the Provisional IRA would retaliate so had provided the 3rd Battalion as reinforcements to the local battalions.