- 50,000 Vietminh surrounded it and attacked with artillery
- Destroyed runaway preventing French aircraft from bring supplies, so French ran out of water & medicines
- Lasted 55 days, French surrended on 7th May 1954
- 3,000 French killed & 8,000 wounded
- 8,000 Vietminh killed & 12,000 wounded
- French PoWs (prisoners of war) forced to march to prison camps and half died