"The enemy's only action to [guerilla] actions is the sending out of frequent escorts as protection for his convoys, as guards on all his stopping places, bridges, defiles, and the rest. The early efforts of the insurgents may be fairly weak ... but the flames of insurrection will be fanned ...it should be nebulous and elusive; its resistance should never materialize as a concrete body, otherwise the enemy can direct sufficient force at its core and crush it."
He never envisioned the AC-130 gunship. Anybody walking around with a rifle can take a hit before he hears it coming. The guerillas think there are spies everywhere.