The 5th/7th Battalion, the Royal
Australian Regiment (5/7RAR) was formed in 1973 by the amalgamation of the
5th and 7th Battalions which both served in South Vietnam.
In 1975 the
Battalion formed the main part of the Field Force Group Darwin during the
clean up following Cyclone Tracy.
In 1984 5/7RAR became a mechanised
battalion and operates the M113 armoured personnel carrier. It does so a
an Infantry Unit, not Armoured Corps.