In January-February 1968 the Viet Cong mounted a massive offensive throughout South Vietnam during the traditional Tet festivities. The Task Force found itself simultaneously protecting the approaches to the American bases at Long Binh and Bien Hoa as well as fighting the Viet Cong in Phuoc Tuy Province. Operation COBURG, involving 2RAR, and 7RAR, was carried out in the border area between Bien Hoa and Long Kanh Provinces, while companies from 3RAR were involved in fighting in Phuoc Tuy Province to remove the Viet Cong from Baria and Long Dien.