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South Vietnamese Colonel Phạm Ngọc Thảo (pictured)—an undetected communist spy—was reported dead due to injuries sustained during his capture, but it is generally assumed he was killed on the orders of military officials.

Historical image related to South Vietnamese Colonel Phạm Ngọc Thảo (pictured)—an undetected communist spy—was reported dead due to injuries sustained during his capture, but it is generally assumed he was killed on the orders of military officials. from July 16, 1965

Army of the Republic of Vietnam

Defunct South Vietnamese ground forces

The Army of the Republic of Vietnam composed the ground forces of the South Vietnamese military from its inception in 1955 to the Fall of Saigon on 30 April 1975. Its predecessor was the ground forces of the Vietnamese National Army, established on 8 December 1950, representing…
Source: Wikipedia (CC BY-SA)

Phạm Ngọc Thảo

North Vietnamese spy (1922–1965)

Phạm Ngọc Thảo, also known as Albert Thảo, was a Vietnamese military officer and spy. He was a communist sleeper agent of the Việt Minh who infiltrated the Army of the Republic of Vietnam (ARVN) and also became a major provincial leader in South Vietnam. In 1962, he was made…
Source: Wikipedia (CC BY-SA)

People's Army of Vietnam

Primary combined military forces of Vietnam, responsible for national defense

The People's Army of Vietnam (PAVN), officially the Vietnam People's Army, also recognized as the Vietnamese Army, the People's Army or colloquially the Troops, is the national military force of the Socialist Republic of Vietnam and the armed wing of the ruling Communist Party…
Source: Wikipedia (CC BY-SA)