The Battle of Núi Lé (21 September 1971) was the last major battle fought by Australian and New Zealand forces in South Vietnam. The battle was fought in the former Phước Tuy Province between elements of the People’s Army of Vietnam (PAVN) 33rd Regiment and ‘B’ and ‘D’ Companies of the 4RAR/NZ (ANZAC) Battalion and during Operation Ivanhoe. Núi Lé, a small hill within Quang Thanh commune in Chau Duc District, is today in Ba Ria-Vung Tau Province.