Why was the Vietnam War considered a battlefield of the cold war

The Vietnam War was considered a battlefield of the Cold War because it was a proxy war fought between the communist forces supported by the Soviet Union and China, and the anti-communist forces supported by the United States and its allies. The war was seen as part of the larger ideological and geopolitical struggle between the communist bloc and the Western capitalist bloc during the Cold War era. The conflict in Vietnam was a manifestation of the struggle for influence and control in Southeast Asia between the two superpowers, and both sides sought to advance their respective interests and ideologies through their involvement in the conflict.