After this they undertook search and destroy operations around Nui Dat, however contact with the VC during this time was limited. In December 1967, 1 ATF was expanded to a brigade-group with the arrival of a third infantry battalion, 3 RAR, and a quantity of Centurion tanks. Between 24 January and 1 March 1968, 7 RAR deployed to Bien Hoa–Long Khanh border along with 2 RAR and subsequently took part in Operation Coburg during the Tet Offensive.
Following this, they conducted a sweep-and-clear operation around Nui Dat, although contact with the enemy was scarce. In December 1967, 1 ATF was upgraded to a brigade-group with the arrival of a third infantry battalion, 3 RAR, and a number of Centurion tanks. Between January 24 and March 1, 1968, 7 RAR deployed to the Bien Hoa–Long Khanh border alongside 2 RAR and subsequently participated in Operation Coburg during the Tet Offensive.