Battle of Dien Bien Phu

A 1954 battle in northwestern Vietnam in which Viet Minh forces defeated a French garrison, accelerating the end of French colonial rule in Indochina.

Siege of Dien Bien Phu: The encirclement and bombardment of the French base by Viet Minh forces from March to May 1954. Its trenches, artillery, and successive assaults explain how the garrison was defeated.
First Indochina War: The 1946–1954 war between France and the Viet Minh over control of Vietnam, Laos, and Cambodia. Dien Bien Phu was the war’s decisive military confrontation.
Vo Nguyen Giap: A Vietnamese general who commanded Viet Minh forces in the First Indochina War and later led North Vietnam's military. He directed the campaign that captured the French stronghold.
French withdrawal from Indochina: The dismantling of French colonial rule in Indochina, completed through the 1954 Geneva settlement and subsequent political changes. Dien Bien Phu made continued French control untenable.
Battle of Him Lam: The Viet Minh assault on the northern outpost of Him Lam, which began the main siege on 13 March 1954. Its capture opened the sequence of attacks that reduced the French perimeter.
Operation Castor: The November 1953 French airborne operation that established a fortified base at Dien Bien Phu. The operation created the isolated position the French later had to defend.
Viet Minh: A Vietnamese independence coalition founded in 1941 and led by Ho Chi Minh. The Viet Minh organized the forces and political campaign that defeated France.
Christian de Castries: A French general who commanded the garrison at Dien Bien Phu. His command became the focal point of French resistance during the siege.
Partition of Vietnam: The temporary division of Vietnam at the 17th parallel established by the 1954 Geneva settlement. The settlement following the battle left Vietnam divided pending elections that never occurred.
Battle of Dominique: A series of battles for the eastern hills overlooking the French base during the siege. Control of these heights exposed the central position to Viet Minh artillery.

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