The fall of Dien Bien Phu shattered French prestige among Algerians. [causal]
By historic chance, this first full meeting of the C.R.U.A. took place the day that the fall of Dien Bien Phu was announced. The impact on the Algerians, many of whose kinsmen had been fighting alongside the French in the besieged camp, was electric. Employing subtlest techniques of psychological warfare, the Viet-Minh suggestively quizzed the Algerians captured there: "Since you are such good soldiers, why do you fight for the colonialists? Why don't you fight for yourselves and get yourselves a country of your own?" Suddenly this unbelievable defeat deprived the glorious French army of its baraka, making it look curiously mortal for the first time. Wild rumours exaggerating the defeat began immediately to take root at home in Algeria, greatly facilitating the C.R.U.A.'s work of recruitment
XREF: Connects to the broader scholarship on how colonial defeats at Dien Bien Phu and later Suez emboldened independence movements across French North Africa, including Sétif and the Algerian War.
Horne, Alistair, A Savage War of Peace- Alge…, loc. 241