The Confederate Army of the Tennessee was composed largely of sons of the Commonwealth from which it derived its name, but almost every other State in the Confederacy was represented. A picturesque and romantic element was the famous "Orphan Brigade" composed of Kentuckians who fought for the South while their State adhered to the North, and who attested their heroism on many occasions during the war. The two armies were substantially equal in strength, for the Army of the Cumberland reported an available present of 43,400 men, while the Army of the Tennessee, which had the advantage of position, showed 37,700 ready for battle. The Southern Army was greatly superior in cavalry, for this arm of the service had not, as yet, received in the North the attention it warranted. On the other hand, the Northern Army was greatly superior in artillery. While the bulk of both armies was made up of veteran troops, each had considerable percentages of raw levies. Gen. Braxton Bragg had the advantage,--somewhat doubtful in his case,--of long service with his Army of the Tennessee. He was a splendid organizer and disciplinarian, thoroughly versed in the technique of his profession, brave, honorable, devoted to his cause, and a strategist of no mean order. But he united a high, imperious temper and a saturnine disposition with a martinet's passion for the letter of military regulation and etiquette. As a consequence, he was frequently embroiled with those near him in stations of authority,--officers who did not hesitate to accuse him of finding convenient scapegoats for his own errors. His controversies with those under him form an interesting chapter of Confederate records. It is but just to him to add that there were those that fought under him who testified to warm admiration for his soldierly abilities and who entertained high personal esteem for his qualities as a man. Bragg's army was divided into two corps. One of these corps was commanded by Lieutenant-General William J. Hardee, who had won a conspicuous position in the Army of the United States before he had come to offer his sword and talents to the Confederacy. He was the author of a book of tactics employed in the United States Army long after the Civil War,--a system said to have been founded on the drill regulations devised by Napoleon. The other corps was commanded by Lieut.-Gen, Leonidas Polk, who was Bragg's pet aversion, and who spent much of the next twelve months in writing to Richmond about his superior and extricating himself from the latter's orders of arrest. General Polk had been educated at West Point, but had afterward entered the Episcopal Ministry. When the war broke out he was Bishop of Louisiana; but he speedily exchanged the surplice for the uniform, and attained high rank in the Southern Army. He was a man of considerable warlike talent, though perhaps short of first-grade.