⚔️🔒Battle of Route Coloniale 4,
(Cao Bang Ridge Disaster),
16 Sep-18 Oct 1950
The Battle of Route Coloniale No. 4 (Cao Bang Ridge Disaster) was one of the worst military defeats in the history of colonial wars, with a French force of ~6,000 troops destroyed. The battle took place along a 137km section of RC4 between Lang Son in the south and Cao Bang in the north. The French attempted to evacuate the Cao Bang garrison with support from a relief column. Both forces were destroyed in the jungle-covered mountains around Dong Khé.


