Progress of Vietnamese military art

Route 9 Liberation Army soldiers used the remains of an enemy helicopter as a platform to shoot down enemy aircraft. (Photo: VNA)

An American transport plane was shot down by the Liberation Army when it risked its life to land at Ta Con airport to supply Khe Sanh base. (Photo: VNA file)

Khe Sanh base after being attacked and destroyed by the Northern Quang Tri Liberation Army. (Photo: VNA documents)

The Tri Thien Liberation Army poured fire into the enemy base. (Photo: VNA)

Enemy tanks, armored vehicles, and military transport vehicles scatteredly retreated from Khe Sanh base. (Photo: VNA documents)

The Tri Thien Liberation Army ambushed and defeated the enemy as they fled from Khe Sanh. (Photo: VNA Document)

Wreckage of an American plane shot down by the Liberation Army during the Route 9-Khe Sanh Campaign. (Photo: VNA archive)

A spearhead unit of the Quang Tri Liberation Army captured the puppet command headquarters and the US advisors' building in Huong Hoa district. (Photo: VNA documents)

Villagers of Lang Vay met Liberation Army soldiers on their way back to their villages and fields after their homeland was liberated. (Photo: VNA)

After capturing Huong Hoa district, the Liberation Army soldiers took advantage of enemy bunkers to crush counterattacks and shoot down enemy aircraft. (Photo: VNA documents)

The headquarters of the puppet local military command in Huong Hoa district after being attacked and destroyed by the Northern Quang Tri Liberation Army. (Photo: VNA documents)

The Liberation Army used mortars to attack in the battle to capture Huong Hoa district, achieving an outstanding feat. (Photo: VNA documents)

The US base in Khe Sanh was shelled by the Liberation Army. (Photo: International Documents/VNA)

On July 5, 1968, the last US Marine units withdrew from Khe Sanh. (Photo: International Documents/VNA)

The US base in Khe Sanh was shelled by the Liberation Army. (Photo: International Documents/VNA)

Aircraft parachuting supplies to US Marines who were being tightly surrounded by the Liberation Army in Khe Sanh. (Photo: International Documents/VNA)

US Marines rushed to the plane on the runway at Khe Sanh base to escape. (Photo: International Document/VNA)

American helicopters and transport planes came to rescue their comrades in Ta Con who were shot to pieces by the Liberation Army. (Photo: International Documents/VNA)

Wreckage of an American plane shot down by the Liberation Army during the Route 9 - Khe Sanh campaign. (Photo: VNA archive)

The Liberation Army charged and attacked the enemy post in the military sub-region of Huong Hoa district. (Photo: VNA documents)

Liberation Army crossed high passes and deep streams to enter Khe Sanh front. (Photo: VNA documents)

Soldiers of the 8th Company of the Route 9 Liberation Army use anti-aircraft machine guns to fight against US aircraft on Hill 689 on the Khe Sanh front. (Photo: VNA documents)