Speak of France, and most of us think of the five-sided country between Spain and Germany. That would be partly correct, but “la Métropole” or “Metropolitan France” today accounts for only 82.2% of the landmass of la République Française. The overseas departments and territories which make up “la France d’outre-mer”, “Overseas France”, account for the rest.
That overseas percentage would have been higher in the mid-20th century, with many former colonial territories added in, among them Laos, Cambodia and Vietnam.
Japanese occupation of southeast Asia caused the Europeans to leave French Indochina during WWII. Within a year of re-occupation, French forces faced virulent opposition from the Nationalist-Communist Viet Minh, led by Ho Chi Minh and Vo Nguyen Giap. It was a low level, rural insurgency at first, later becoming a full-scale modern war when Chinese Communists entered the fray in 1949.
What historians call the First Indochina War, many contemporaries called “la sale guerre”. The “dirty war”. The government forbade the use of metropolitan recruits, fearing that would make the war more unpopular than it already was. Instead, French professional soldiers and units of the French Foreign Legion were augmented with colonial troops, including Moroccan, Algerian, Tunisian, Laotian, Cambodian, and Vietnamese ethnic minorities.
The war went poorly for the French. By 1952 they were looking for a way out. Premier René Mayer appointed Henri Navarre to take command of French Union Forces in May that year, with a single order. Navarre was to create military conditions which would lead to an “honorable political solution”.
Late in the preceding year, the French army had air lifted soldiers into a fortified position at Na San, adjacent to a key Viet Minh supply line to Laos. Superior French fire power, armor and air resources had driven Vo Nguyen Giap’s forces back with heavy losses, in what French planners called the “hérisson” or “hedgehog” strategy.
In June, Major General René Cogny proposed a “mooring point” at Dien Bien Phu: a lightly defended point from which to launch raids. Navarre wanted to replicate the Na San strategy, and ordered that Dien Bien Phu be taken and converted into a heavily fortified base.
“Operation Castor” began on the 20th of November, with three parachute infantry battalions dropped into Dien Bien Phu. The operation was completed with minimal French casualties on November 30, as supplies, troops, and engineering equipment poured into the isolated base.
Under the command of Colonel Christian de Castries, French forces built seven fortified positions to defend the base, each reportedly named after one of his mistresses. 10,800 French troops were committed, with another 16,000 in reserve.
Vo felt that he’d made a serious mistake at Na San, rushing his troops in piecemeal against French defenses. This time, he carefully prepared his positions, moving 50,000 men into position around the valley, meticulously stockpiling ammunition and placing his anti-aircraft and heavy artillery, with which he was well supplied.
The French staff based their battle plan on the assumption that it was impossible for the Viet Minh to place enough artillery on the surrounding high ground, due to the rugged terrain. Communist forces didn’t possess enough artillery to do serious damage anyway, or so they thought.
French officers quickly learned how mistaken they had been. The first sporadic artillery fire began on January 31, around the time that patrols discovered the enemy’s presence in every direction. Heavy artillery virtually ringed the valley in which they found themselves, and air support was quickly nullified by the enemy’s well placed anti-aircraft fire.
The Viet Minh assault began in earnest on March 13, when several outposts came under furious artillery barrage. Air support became next to impossible, and counter-battery fire was next to useless against Giap’s fortifications. Lieutenant Colonel Charles Piroth commanded the French artillery at Dien Bien Phu. He was a professional soldier and no lightweight, having had his arm amputated in 1946 with no anesthesia. When it became clear how wrong his assumptions had been, he circled the camp making apologies to his officers, returned to his tent, and killed himself with a hand grenade.
“Beatrice” was the first fire base to fall, then “Gabrielle” and “Anne-Marie”. Viet Minh controlled 90% of the airfield by the 22nd of April, making even parachute drops next to impossible. On May 7, Vo ordered an all-out assault of 25,000 troops against the 3,000 remaining in garrison. By nightfall it was over. The last words from the last radio man were “The enemy has overrun us. We are blowing up everything. Vive la France!”
Military historian Martin Windrow wrote that Dien Bien Phu was “the first time that a non-European colonial independence movement had evolved through all the stages from guerrilla bands to a conventionally organized and equipped army able to defeat a modern Western occupier in pitched battle”.
The Geneva conference opened the following day, resulting in a Vietnam partitioned into two parts. In the north was the “Democratic Republic of Vietnam” administered by the communists, and the State of Vietnam in the south, under Emperor Bao Dai and Prime Minister Ngo Dinh Diem. The North was supported by both the People’s Republic of China and the Soviet Union, and continued to terrorize patriots in north and south alike.
US support for the south increased as France withdrew its own. By the late 50s, the US was sending technical and financial aid in expectation of social and land reform. By 1960, the National Front for the Liberation of South Vietnam (NLF, or “Viet Cong”) had taken to murdering Diem supported village leaders. JFK responded by sending 1,364 American advisers into South Vietnam, in 1961.
The next war in Indochina, had begun.