With full allowance for changes in army and battle formation, tactical action and armament, as well as greater facilities for the transportation of troops and army supplies, it remains true that the relative effect of all these changes upon success in war upon a grand scale, has not been the modification of those principles of military science which have shaped battle action and the general conduct of war, from the earliest period of authentic military history. The formal “Maxims of Napoleon” were largely derived from his careful study of the campaigns of Frederick, Hannibal, and Cæsar; and these, with the principles involved, had specific and sometimes literal illustration in the eventful operations of the armies of the Hebrew Commonwealth. As a matter of fact, those early Hebrew experiences were nearly as potential in shaping the methods of modern generals, as their civil code became the formative factor in all later civil codes, preëminently those of the English Common Law. The very best civil, police, and criminal regulations of modern enactment hold closely to Hebrew antecedents. And in military lines, the organization of regiments by companies, and the combinations of regiments as brigades, divisions and corps, still rest largely upon the same decimal basis; and neither the Roman legion nor the Grecian phalanx improved upon that basis. Even the Hebrew militia, or reserves, had such well-established comprehension of the contingency of the entire nation being called to the field, or subjected to draft, that as late as the advent of Christ, when he ordered the multitudes to be seated upon the grass for refreshment, “they seated themselves in companies of hundreds and fifties.” The sanitary and police regulations of their camps have never been surpassed, nor their provision for the cleanliness, health, and comfort of the rank and file. From earliest childhood they were instructed in their national history and its glorious achievements, and the whole people rejoiced in the gallant conduct of any. Changes in arms, and especially in projectiles, only induced modified tactical formation and corresponding movements. The division of armies into a right, centre, and left, with a well-armed and well-trained reserve, was illustrated in their earliest battle record. The latest modern formation, which makes of the regiment, by its three battalion formation, _a miniature brigade_, is chiefly designed to give greater individual value to the soldier, and not subject compact masses to the destructive sweep of modern missiles. It also makes the force more mobile, as well as more comprehensive of territory within its range of fire. All this, however, is matter of detail and not of substance, in the scientific conduct of campaigns during a protracted and widely extended series of operations in the field.