Biaggi's extremism opened Gaullist access to Pétainist veterans groups [causal]
To sympathetic ears Biaggi expounded, with perhaps more typically Corsican passion than legal reasoning, the view that the Fourth Republic could now claim no more legitimacy than Pétain's Vichy in 1940. His eccentricity, his war record, but above all his extremism made him the darling of the Right in Algiers and helped open doors for the Gaullists to the pied noir veterans' organisations that were hitherto predominantly Pétainist.
Horne, Alistair, A Savage War of Peace- Alge…, loc. 841