Between March and May 1954, the climate conflict between France and the North Vietnamese army determined the predecessor of the first Indochinese war, the Vietnam War (Plinger). This climax showdown called Dien Bien Phu's fight was a big loss for the Frenchman and it was a decisive victory for the Vietnamese army in northern Vietnam. The French army made some misunderstandings in the battle, one of which was to tempt Vietnam's general Giap to face aggressive attacks in Dien Bien Phu (Prados).
- On March 13, the battle of Dien Bien Phu began. Because of French failures in Vietnam, Eisenhower ordered the staff's chief to jointly study the vulture strategy, thinking of intervening in tactical nuclear weapons to break the siege of Biambin did. Vulture's operation was eventually rejected as a policy choice. - On January 28th, Nixon started Vietnam's policy that the US Army in Vietnam will gradually decline, and the role of the United States is to provide military training, equipment and aviation assistance for South Vietnam. Vietnam is aimed at reducing US losses in Vietnam, thereby reducing domestic pressure against the full withdrawal of the US military. Nixon's goal in Vietnam is to force Nixon to change the pressure of the domestic anti-war protest while forcing the Nixon to change the pressure of the Korean war style while demanding that Hanoi continue war until Hanoi agrees to the terms of the United States It is to do.
After the defeat of the Dien Bien Phu campaign and the Geneva agreement in 1954, the French left Hanoi and the prison was under the jurisdiction of the Democratic Republic of Vietnam. Since that time prisons have become the center of education for revolutionary doctrine and activities and have been used to commemorate the historical significance to North Vietnam after France left. During the Vietnam War, the first American prisoner of war who was sent to Hyea Lò was Evette Alvarez, a junior high school student who was shot down on August 5, 1964. From the beginning, American POWs endured the tragic situation including poor food and unsanitary conditions. The prison building was criticized by American prisoners of war as "Hanoi Hilton" referring to the famous Hilton hotel chain.