Battle of Mao Khé

The Battle of Mao Khé pitted French forces against two Việt Minh divisions launched in an assault on the strategic mining sector of Route 18. The fighting was fierce, particularly around the town of Mao Khé and the surrounding hills. Despite the Việt Minh's numerical superiority, the rapid intervention of French reserves, air support, and artillery allowed the offensive to be broken. This dearly won victory consolidated the defense of the delta and delayed the Việt Minh advance toward Haiphong.

After the failure of the offensive at Vĩnh Yên, Giáp attempted a breakthrough on Route 18, a vital road linking Hanoi to Haiphong, in a coal-mining region essential to the colonial economy. The French command, led by de Lattre, understood the importance of the sector and concentrated mobile forces, armor, and considerable firepower there.

The Việt Minh attacked in force, seeking to encircle Mao Khé through night assaults, infiltration into villages, and wave attacks on French strongpoints. The defenders organized an elastic defense, using armored counterattacks, artillery barrages, and close air support to break up enemy concentrations. The Legion battalions withstood successive assaults and recaptured lost positions in violent hand-to-hand fighting.

The victory at Mao Khé prevented the fall of the mining sector and secured Route 18, preserving French logistics between Hanoi and Haiphong. It demonstrated the ability of the French to contain major offensives despite their numerical inferiority. However, the high losses and continuous Việt Minh pressure foreshadowed a long-term war of attrition unfavorable to France.