What early 1950s conflict was the first site of open warfare between communist and non-communist forces (following,of course,the Greek civil war in the previous decade) ?

A) Korean War
B) Vietnam War
C) Algerian War for Independence
D) Congolese Civil War
E) Suez War

Communist Forces

Political groups or military units that adhere to communist ideologies, often involved in revolutionary activities or governance in various countries.

Greek Civil War

A conflict from 1946 to 1949 in Greece, fought between the Communist-led Democratic Army of Greece and the Greek government army, backed by the UK and USA.

Korean War

A conflict between North Korea, with the support of China and the Soviet Union, and South Korea, supported by the United Nations primarily the United States, from 1950 to 1953.