Concept

Battle of Dien Bien Phu

Summary
The Battle of Điện Biên Phủ (Bataille de Diên Biên Phu bataj də djɛ̃ bjɛ̃ fy; Chiến dịch Điện Biên Phủ, t͡ɕjěn zîk̚ ɗîənˀ ɓīən fû) was a climactic confrontation of the First Indochina War that took place between 13 March and 7 May 1954. It was fought between the French Union's colonial Far East Expeditionary Corps and Viet Minh communist revolutionaries. The United States was officially not a party to the war, but it was secretly involved by providing financial and material aid to the French Union, which included CIA contracted American personnel participating in the battle. The People's Republic of China and the Soviet Union similarly provided vital support to the Viet Minh, including most of their artillery and ammunition. The French began an operation to insert, and support, their soldiers at Điện Biên Phủ, deep in the autonomous Tai Federation up in the hills northwest of Tonkin. The operation's purpose was to cut off Viet Minh supply lines into the neighboring Kingdom of Laos (a French ally), and draw the Viet Minh into a major confrontation in order to cripple them. The plan was to resupply the French position by air, a strategy adopted based on the belief that the Viet Minh had no anti-aircraft capability. The Viet Minh, however, under General Võ Nguyên Giáp, surrounded and besieged the French. They brought in vast amounts of heavy artillery (including anti-aircraft guns) and managed to move these bulky weapons through difficult terrain by individual men and women up the rear slopes of the mountains. They dug tunnels through the mountains and arranged the guns to target the French position. In March, the Viet Minh began a massive artillery bombardment of the French defenses. The strategic positioning of their artillery made it nearly impervious to French counter-battery fire. Tenacious fighting on the ground ensued, reminiscent of the trench warfare of World War I. At times, the French repulsed Viet Minh assaults on their positions while supplies and reinforcements were delivered by air.
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