 On 13 February, Abrams established MACV Forward at Phu Bai, effectively replacing Cushman and assuming overall control of all U.S. forces in I Corps.Within the ARVN 1st Battalion, 3rd Regiment and 2nd and 7th Airborne Battalions cleared out the north and western parts of the Citadel including the Chanh Tay Gate, while the 4th Battalion, 2nd Regiment moved south from Mang Ca towards the Imperial Palace, killing over 700 PAVN-VC by 4 February.On 5 February Trưởng exchanged the Airborne with the 4th Battalion, which had become stalled.