necessities exist there, as here, for large numbers of large armies. The most important and extensive modern European wars witnessed the prosecution of only one important operation at a time, while in this country we have carried on several campaigns simultaneously, and fought pitched battles whose tactical as well as strategic success depended on the result of operations five hundred miles distant. Bragg won the victory of Chickamauga only by the aid of re-enforcements sent him from Richmond; the besieged army of Rosecrans at Chattanooga was saved from dispersion only by the timely re-enforcements sent him, under Hooker, from Washington; while Schofield, with twenty thousand men, after fighting at Nashville, Tennessee, in the middle of winter, was operating in North Carolina, opening communications with Sherman, a fortnight subsequently. In Europe, concentration is forced on each party by the configuration and confined area of the seat of war. In this country the opposite effect has naturally been the result of the opposite circumstances, and the finest display of generalship which we have had was shown by Grant in the consummate skill with which, in the latter year of the war, he concentrated our two greatest armies, and employed his cavalry against the vital point of the rebellion, while with the fractional organizations he kept the enemy employed in the far West. Generally speaking, any two European powers at war are represented each by a single army, which are brought together upon a field of battle to decide at a blow the question in dispute, and thus the European generals are afforded better chances for the display of tactical abilities. In Europe, cavalry plays an important part on every battle-field, while in this country its assistance has seldom been asked in actual battle, though a no less effective application has been made of it in destroying communications. Except in the battle of General Sheridan, and in some instances where accident has brought cavalry into battle, our troopers were never legitimately employed. The art of marching as practiced in Europe was also varied here, and the European system of supplying an army is very different from our own. Their lines of march are decided by the necessities for providing cantonments in the numerous villages of the country, while on this continent marches are retarded, if not controlled, by the necessity of carrying tents for camps. The parallel which is here merely outlined might be pursued by one better fitted for the task to a highly suggestive and interesting conclusion.