The 3rd/4th Cavalry Regiment is an armoured unit within the Australian Army's Royal Australian Armoured Corps. Formed in 1981 with the amalgamation of the 3rd Cavalry Regiment and the 4th Cavalry Regiment, from 1986 to 2014 the unit consisted of an independent squadron, B Squadron 3rd/4th Cavalry Regiment, within the 3rd Brigade in Townsville, Queensland. From 2017, B Squadron 3rd/4th Cavalry Regiment has been the training support and logistics squadron within the School of Armour at Puckapunyal in Victoria. History 3rd Cavalry Regiment The 3rd Cavalry Regiment was formed in beginning of 1967 when, as a result of a re-organisation of the units of the Royal Australian Armoured Corps, the 1st Armoured Personnel Carrier Squadron which was serving in Vietnam at the time, was renamed as 'A' Squadron, 3rd Cavalry Regiment. At the same time 'B' Squadron, 3rd Cavalry Regiment was formed in Australia to provide a follow-on force and relieve 'A' Squadron at the end of their tour. Equipped with the M113A1 armoured personnel carriers (APCs), its initial strength in Vietnam was 10 officers and 107 men. Both 'A' and 'B' Squadrons of the 3rd Cavalry Regiment would continue this extensive service throughout the remainder of Australia's involvement in Vietnam as part of the 1st Australian Task Force (1 ATF), with a squadron of the regiment operating there for nearly the next six years. The rotation of these two squadrons would continue until the withdrawal of Australian forces in 1972. Prior to this, however, when 'A' Squadron was relieved by 'B' Squadron on 13 May 1969, most of its personnel were transferred to 2nd Cavalry Regiment while 'B' Squadron, 3rd Cavalry Regiment finished their tour in country on 6 January 1971 when they were relieved by 'A' Squadron and returned to Australia. 'B' Squadron was subsequently relocated in Townsville. They remained at Townsville until they were amalgamated with the 4th Cavalry Regiment in 1981. Meanwhile, the regiment's strength in Vietnam increased over time and by August 1971 had grown to 15 officers and 154 men. In mid-1971 'A' Squadron received six M113A1 Fire Support Vehicles (FSV), each armed with 76 mm gun mounted in a Saladin turret. The FSV was more heavily armed than the M113A1 carrier but was still only lightly protected, being designed for defensive tasks to free the Centurion tanks for offensive operations. However, in August the Australian government announced that 1 ATF would be withdrawn