The appointment of General Burnside was followed by the organization of a portion of the army into divisions, and a movement to concentrate it at Fredericksburg. OPERATIONS IN KENTUCKY. JUNE TO SEPTEMBER, 1862. Never in the history of the world has there been a war of such magnitude as that waged by the loyal Unionists against the Southern insurgents in the American Republic, and never have the divisions of military forces stretched over so wide a field of operations. While the Army of the Potomac was fighting in Virginia, the struggle of loyalty and treason was going on in Kentucky. The masses of the people there were in favor of the Union; but their feeling was so cold, and had been operated on so strongly by Secession-sympathizing slaveholders, that as a body, they desired to remain simply neutral. The Governor of Kentucky, Beriah Magoffin, adopted a position of strict neutrality, and in accordance with this unpatriotic spirit, the slaveholding Senate of the State passed a decree that the State “will not sever her relations with the National Government, nor take up arms for either belligerent party.” At the same time, while refusing to lend the National cause any assistance, the slaveholding aristocracy of Kentucky entreated the people of the loyal North to yield to the rebels and win them back by amending the Constitution, in such a way as to make it a bulwark of negro slavery. But all this manœuvering was finally terminated, and the men of Kentucky were driven either to the protection of the national flag, or to the camps of the rebels. The battles before Richmond, Virginia, having paved the way for a general rebel advance, the enemy resolved on an effort to transfer the field of battle to northern soil; and it was in pursuance of this plan that General Lee had invaded Pennsylvania; but having been signally repulsed, he had, as we have seen, been obliged to abandon the attempt. Early in June guerrilla operations became troublesome in some of the lower counties of Kentucky. At Madisonville, in Hopkins county, a descent was made by a small body of them at night. The county clerk’s office was broken open and the records of the court carried off or destroyed. In other places horses and other property were taken. Their own friends, equally with Union citizens, were robbed. In Jessamine, Mercer, Boyle, and Garrard counties bridges over the streams were burned. On the 5th of July Lebanon was taken. It is at the termination of the Lebanon branch of the Louisville and Nashville road. About the same time Murfreesboro’, in Tennessee, was captured by a strong guerrilla force under Colonel Forrest. Vigorous opposition was, however, made by the small body of Federal troops stationed there. The Ninth Michigan regiment, however, was captured entirely by surprise, with Brigadier-Generals Duffield and Crittenden, of Indiana.