The Art of War has been very simply defined as 'the art which enables any commander to worst the forces opposed to him.' It is therefore conversant with an enormous variety of subjects: Strategy and Tactics are but two of the more important of its branches. Besides dealing with discipline, organization, and armament, it is bound to investigate every means which can be adapted to increase the physical or moral efficiency of an army. Contents:The Transition from Roman to Medi val Forms in War - A.D. 378 582. The Early Middle Ages - A.D. 476 1066 81. The Byzantines and their Enemies - A.D. 582 1071. The Supremacy of Feudal Cavalry - A.D. 1066 1346. The Swiss - A.D. 1315 1515. The English and their Enemies - A.D. 1272 1485.