Operation Coburg (24 January − 1 March 1968) was an Australian and New Zealand military action during the Vietnam War. The operation saw heavy fighting between the 1st Australian Task Force (1 ATF) and North Vietnamese Army and Viet Cong during the wider fighting around Long Binh and Bien Hoa. American and South Vietnamese intelligence reports had indicated that an imminent communist offensive during the Tet New Year festival was likely, and in response the Australians and New Zealanders were deployed away from their base in Phuoc Tuy Province to bolster American and South Vietnamese forces defending the Long Binh–Bien Hoa complex north-east of Saigon. 1 ATF deliberately established fire support bases astride the communist lines of communication in the vicinity of the village of Trang Bom, expecting that they would attempt to destroy them.