President Nixon dispatched bombers in Operation Linebacker to provide air support for the ARVN when it seemed that South Vietnam was about to be lost. In desperation, President Nguyễn Văn Thiệu fired the incompetent General Hoàng Xuân Lãm and replaced him with General Ngô Quang Trưởng. He gave the order that all deserters would be executed and pulled enough forces together in order to prevent the PAVN from taking Huế. Finally, with considerable US air and naval support, as well as hard fighting by the ARVN soldiers, the Easter Offensive was halted. ARVN forces counter-attacked and succeeded in driving some of the PAVN out of South Vietnam, though they did retain control of northern Quảng Trị Province near the DMZ.