The Philippeville massacre was a strategic victory for the F.L.N. [fact]
Though some Muslims may have recoiled in disgust, by October recruitment in the North Constantine area had risen to an estimated 1,400 “regulars”—almost the highest of any of the Wilayas—and from then on it was to remain throughout the war one of the most highly contaminated areas on the army “smallpox chart”. As Soustelle himself admitted, in the war of subversion the Philippeville massacre was a victory; for, between the two communities, “there had been well and truly dug an abyss through which flowed a river of blood”. What had hitherto been, in many respects, a “phoney war”—or drôle de révolution as some French called it—now became a full-blooded war to the end.
QUESTION: Interesting counterfactual question: did this 'net gain' calculus actually translate to long-term success, or just short-term recruitment bump?
Horne, Alistair, A Savage War of Peace- Alge…, loc. 388