March 22, 1954: Dien Bien soldiers exchange blood and sweat for every metre of trenches On March 22, 1954, Vietnamese soldiers continued to dig trenches. The two main lines of trenches advancing from the north embraced the Central subdivision on the east and west sides; at the same time, isolate this subdivision from the enemy's Isabelle base cluster in the south. 22:55 | 24/03/2024
