 Thieu agreed that Trưởng should attempt to hold Huế despite misgivings as to the ARVN's ability to hold the city and the navy's ability to supply them.Trưởng returned to Da Nang to reorganise his forces for the defense of Huế but was immediately confronted with a PAVN frontal assault against Quảng Trị Province and the ARVN soon retreated towards Huế.On 21 March the PAVN launched attacks south of Huế aimed at isolating the city and preventing the reinforcement or withdrawal or ARVN forces into the city and establishment of defensive lines.