This was first published by T.E. Lawrence (”Lawrence of Arabia” ) in the Army Journal and Defence Quarterly, October 1920.
... It seemed that rebellion must have an unassailable base, something guarded not merely from attack, but from the fear of it: such a base as we had in the Red Sea Parts, the desert, or in the minds of the men we converted to our creed.It must have a sophisticated alien enemy, in the form of a disciplined army of occupation too small to fulfil the doctrine of acreage: too few to adjust number to space, in order to dominate the whole area effectively from fortified posts. It must have a friendly population, not actively friendly, but sympathetic to the point of not betraying rebel movements to the enemy. Rebellions can be made by 2 per cent. active in a striking force, and 98 per cent. passively sympathetic. The few active rebels must have the qualities of speed and endurance, ubiquity and independence of arteries of supply. They must have the technical equipment to destroy or paralyse the enemy’s organized communications, for irregular war is fairly Willisen’s definition of strategy, “the study of communication” in its extreme degree, of attack where the enemy is not. In fifty words: Granted mobility, security (in the form of denying targets to the enemy), time, and doctrine (the idea to convert every subject to friendliness), victory will rest with the insurgents, for the algebraical factors are in the end decisive, and against them perfections of means and spirit struggle quite in vain.