nov 1, 1955 - Vietnam War

Description:

It was the second of the Indochina Wars and was officially fought between North Vietnam and the government of South Vietnam. The North Vietnamese army was supported by the Soviet Union, China, and other communist allies; the South Vietnamese army was supported by the United States, South Korea, the Philippines, Australia, Thailand and other anti-communist allies.

The Cold War concept that this event matches to is Proxy War.This is because the East and West powers were supplying opposing sides of the war.