Explore "Some Principles of Frontier Mountain Warfare" by Wilkinson Dent Bird on Textopian. Read with annotations and highlights.
The protection of a line of communication is secured by combination of passive and active measures, though the latter are of the greatest importance.
Passive measures include the provision of fortified staging posts, linked up by a series of road picquets, and supplemented by escorts to convoys. The active defence is by means of flying columns.