The situation of the enemy in Tam Ky became extremely chaotic. The commander of Division 22, along with Regiments 4 and 5 under the Ranger Battalion 12 of the Army of the Republic of Vietnam (ARVN), abandoned their command headquarters and fled.
By noon, the Ba Gia Regiment under the Liberation Army had taken control of the town, while Regiment 31 had secured all the provincial military posts. The road 1, which connected Da Nang to the enemy’s southern defence positions, was cut off. Da Nang, the largest military base of the ARVN's regime in central Vietnam, was now completely isolated.
In southern Quang Ngai, the Infantry Division 2 of Military Region 5 launched an attack on the enemy’s defensive line in Tam Ky at 5:30 AM on March 24, 1975.
At 7:00 AM, the Artillery Regiment 576 opened fire on the town. Two battalions from Brigade 52, along with the special forces battalions 403 and 406 of Military Region 5, the local Battalion 7, and the town’s forces, supported by tanks and armoured vehicles from the Regiment 574, simultaneously attacked and captured Xiec Hamlet, the airport, Ong Bo Train Station, and Ba La Intersection. Regiment 94, along with local forces, took control of Nui Vo, destroyed the O Song Bridge, and cut off road 1 from Son Tinh to Binh Son.
On the night of March 24, 1975, the Liberation Army launched an assault on Quang Ngai provincial-level Town. By 11:30 PM on March 24, the town was completely liberated.
On the way to the Central Highlands, the Regiment 271 had liberated Kien Duc and Gia Nghia provincial-level town by March 24, 1975. Division 10 and Regiment 25 annihilated and dispersed Regiment 40 (Division 22 of the ARVN) along with four security battalions, successfully liberating the Khanh Duong Military Subdistrict and District Headquarters.
At 11:00 AM on March 24, detecting the enemy retreating from Cung Son, Regiment 64 coordinated with Battalion 96 to swiftly deploy a company to intercept them while simultaneously organising a two-pronged attack. The enemy fell into disarray and was quickly defeated, with only a few managing to escape to Tuy Hoa.
By March 24, the rapid pursuit along road 7 by Division 320, reinforced infantry units, and local militia concluded in a decisive victory. The enemy’s strategic attempt to retreat and regroup in the lowlands was crushed, marking a strategic turning point in the war and accelerating the collapse of enemy forces.
On road 20, Division 7 continued its advance toward Lam Dong.
On the Hue front, in the western sector, the Infantry Regiment 4 of Military Region 5 and the Quang Tri Battalion 8, after defeating the Battalion 5 of the Marine Brigade 147 in the south of the Bo River, faced a fierce counterattack from the enemy. The enemy deployed the Ranger Squadron 4 and a squadron of M113 armoured vehicles in an attempt to reclaim lost ground, leading to intense and prolonged combat.
The enemy was forced to demolish the An Lo Bridge and retreat by 5:00 PM on March 24, 1975. Regiment 4 then shifted to pursuing the fleeing enemy forces.
In the central front of the Hue battlefield, Quang Tri Provincial Battalions 14 and 812 crossed the O Lau River to attack enemy positions in Phong Hoa and Phong Binh communes and pursue retreating forces as they abandoned My Chanh Commune and fled toward Sia Town on March 24, 1975. Battalion 14 continued its assault directly into the Mang Ca Nho area in the northeast of Hue City. On the western front of Hue, following orders for a rapid advance toward the city, the Infantry Regiments 6 and 271 of Military Region 5 broke through enemy defensive lines, capturing Dinh Mon and Kim Ngoc villages, and preparing to cross the Huong (Perfume) River. On the night of March 24, 1975, the enemy forces abandoned Hue City and fled.
On the same day, the General Staff ordered the Army Corps 1, stationed in southern Quang Binh and northern Quang Tri, to manoeuvre southward in preparation for upcoming combat operations as directed by the General Staff.
