Military history of Australia during the Vietnam War sought to reassert control over French Indochina, which had been occupied by Japan. In 1950, as the communist-backed Việt Minh, led by Ho Chi Minh, began to gain the ascendency in the First Indochina War, the Vietnamese nation had two parallel administrations; the Democratic Republic of Vietnam (DRV) (recognised by the Soviet Union and the People's Republic of China) and the State of Vietnam (SoV), an associated state in the French Union (recognised by the non-communist world). In 1954, after the defeat of the French at the Battle of Dien Bien Phu, the Geneva Accords of 1954 split the country
Quagmire theory the world. In the same year, the First Indochina war commences. This war between the Vietminh and the French, concluded with the Battle of Dien Bien Phu, a decisive victory by the Vietminh. From the First Indochina War, two states emerged, the Communist ruled north and the south, split by the 17th parallel-agreed upon at the Geneva Convention in 1954. Soon after, in 1955, war breaks out between the north and south. The domino theory was a well-accepted theory during this time period, introduced by Dwight D. Eisenhower, states that if one country falls to communism, then the rest of