Some Principles of Frontier Mountain Warfare by W.D. Bird is about the tactics and strategies used while going to war on a mountain. Excerpt: "The strength and organization of a force destined to undertake operations against the transborder clans of the Indian frontier are naturally conditioned by the physical features of the area, by its fertility, and by the numbers, character, organization, and armament of its inhabitants. It has been truly said that in war every available man should be employed, for one can never be too strong, but this aphorism is always qualified by the number of men that can be fed in the district which is to form the seat of war."