The new leaders coming to Algeria had been profoundly affected by the disastrous lessons of the Indo-China campaign; particularly of Dien Bien Phu, after which a number had spent humiliating months as prisoners of the Viet-Minh. This experience had provided them with the opportunity to make an intimate study of the victors' technique. They had returned well-versed in Maoist principles and strategy, as adapted by General Giap, and persuaded of the cogency of fighting revolutionary warfare with its own weapons. If the function of the guerrilla was to move like Mao's "fish in water" among the uncommitted masses, then that must be the technique of the counter-revolutionary soldier too; if the Viet-Minh could bend the minds of the populace to their will and extract vital information by resort to subtle — or less subtle — forms of pressure, then so must the security forces. It was no use, says Colonel Roger Trinquier, one of the leading Indo-China hands, merely destroying dispersed armed bands; one had to seek out, crush and eradicate the whole of the clandestine political organisation behind them. If Indo-China had turned its French pupils into superb warriors, it had also made them highly political animals — a fact that was to have as potent an impact upon the French republic as it did on the Algerian war.

XREF: Connects to wider literature on counterinsurgency theory, where doctrine often mirrors insurgent tactics — a recurring pattern beyond this specific French case.

Horne, Alistair, A Savage War of Peace- Alge…, loc. 504