Neither US won nor lost Vietnam War However millions innocent men, women, old and children were perished in that ugly war when US used most modern weaponry of the time. US used napalm bombs and yellow agent and carpet bombing with B52 on villages of Vietnam. The major purpose of this war was to contain Communism in South-East Asia rather than winning the war. Morally US lost the war because purpose of the war was not served at all and which resulted death of 63000 deaths of US soldiers. Look things in proper perspective rather than offering retard comments like tail in legs........