 SECDET V was also involved in two incidents in the northern city of Tall Afar on 8 and 10 December 2004, when 3 Troop, A Squadron of the 2nd Cavalry Regiment was ambushed by insurgents using small arms and rocket propelled grenades.The first incident involved the troop providing an armoured convoy escort to a US engineer unit travelling to Al Kasik.The convoy was ambushed in Tal Afar with the majority of the Australian callsigns returning fire from 25mm and .50cal.