Vietnam War: United States Secretary of Defense Melvin Laird announces that the United States will start to "Vietnamize" the war effort.

The Vietnam War was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam and South Vietnam and their allies. North Vietnam was supported by the Soviet Union and China, while South Vietnam was supported by the United States and other anti-communist nations. The conflict was the second of the Indochina wars and a proxy war of the Cold War between the Soviet Union and US. The Vietnam War was one of the postcolonial wars of national liberation, a theater in the Cold War, and a civil war, with civil warfare a defining feature from the outset. Direct US military involvement escalated from 1965 until its withdrawal in 1973. The fighting spilled into the Laotian and Cambodian Civil Wars, which ended with all three countries becoming communist in 1975.

The United States secretary of defense is the head of the United States Department of Defense (DoD), the executive department of the U.S. Armed Forces, and is a high-ranking member of the federal cabinet. The secretary of defense's position of command and authority over the military is second only to that of the president of the United States, who is the commander-in-chief. This position corresponds to what is generally known as a defense minister in many other countries. The president appoints the secretary of defense with the advice and consent of the Senate, and is by custom a member of the Cabinet and by law a member of the National Security Council.

Melvin Robert Laird Jr. was an American politician, writer and statesman. He was a U.S. congressman from Wisconsin from 1953 to 1969 before serving as Secretary of Defense from 1969 to 1973 under President Richard Nixon. Laird was instrumental in forming the administration's policy of withdrawing U.S. soldiers from the Vietnam War; he coined the expression "Vietnamization," referring to the process of transferring more responsibility for combat to the South Vietnamese forces. First elected in 1952, Laird was the last living Representative elected to the 83rd Congress at the time of his death.