The Mullacreevie ambush took place on 1 March 1991, when a mobile patrol of the Ulster Defence Regiment composed of two Land Rover vehicles was attacked by a Provisional IRA active service unit with an improvised horizontal mortar while passing near Mullacreevie housing estate, on the west side of Armagh City. One member of the UDR was killed instantly when the leading Land Rover was hit, while another died of wounds two days later. Two other soldiers were permanently injured.