Nui Dat is the former military base of the 1st Australian Task Force now part of Ba Ria city in Ba Ria–Vung Tau province, Vietnam. It is not the name of an official ward, it just means "land hill" or
Operation Hardihood was a security operation conducted from 16 May to 8 June 1966 during the Vietnam War by the U.S. 503rd Infantry Regiment, the 1st Battalion, Royal Australian Regiment and the 5th B
Nui Dat
…by Lieutenant General John Wilton in 1966 and was built mainly by men from the 6th Battalion, Royal Australian Regiment. The occupation of Nui Dat in Operation Hardihood required the removal of all inhabitants from within a 4,000-metre (2.5-mile) radius of the base in order to ensure the security of the facility…
5RAR soldiers guard Vietnamese civilians
Australian M113s and U.S. M56 Scorpion during the operation