An excerpt from an official People’s Army of Vietnam historical publication describing a North Korean request to send an Air Force regiment to help defend North Vietnam against U.S. air attacks. The request was approved.

Translated excerpts from an official People’s Army of Vietnam (PAVN) publication which gives a timeline of events of the "Sapper Branch," the Vietnamese army’s commando/special forces troops. These excerpts discuss the Sapper's training of foreign commando forces from Cuba, El Salvador and the Soviet Union.

Translated excerpts from an official People’s Army of Vietnam (PAVN) handbook for the elite "Sapper" forces, Vietnamese army’s commando/special forces troops. These excerpts discuss the Sapper's training of foreign commando forces from countries such as Laos, Cambodia, Cuba, and the Soviet Union.