An encyclopaedia of Richard Ernest and Тревора Невитта Дюпюи is all-embracing certificate edition, representing the evolution of art of war from Antiquity to our days. In one volume the richest material is collected and systematized: huge volume of the archived documents, rare maps, reports of statistical data, self-controls from scientific works and detailed descriptions of the greatest battles.For comfort of the use by an encyclopaedia history humanity conditionally divided into twenty two heads, each of that is sanctified to the temporal period from a 4th millennium to our era to the end the XX century. Essays, anticipating heads, contain information about principles of tactics and strategy of one or another period, features of armament, development of military-theoretical idea and prominent military leaders of epoch. An encyclopaedia contains two pointers: the names and also wars and meaningful mentioned in text armed conflicts. All of it will help a reader to recreate and perceive historical linen on the whole, to understand reasons of one or another war, trace her flow and estimate the actions of war-lords.