There were warriors in plenty who would not have been hasty to break up that agreeable period of rest and social intercourse, but Stuart was not of that class. He felt that he must be up and doing, demonstrating that the Army of Northern Virginia had not gone to sleep; and the early days of October, 1862, saw a stir about head-quarters which indicated that something out of the ordinary was afoot. During the evening of the 8th the officers were engaged in a lively social intercourse with the ladies of "The Bower," the entertainment ending in a serenade in which the banjo and fiddle took chief part. Warlike affairs seemed absent from the thoughts of all, with the exception that the general devoted more time than usual to his papers. [Illustration: COLONIAL MANSION.] With the morning of the 9th a new state of affairs came on. The roads suddenly appeared full of well-mounted and well-appointed troopers, riding northward with jingling reins and genial calls, while the cheery sound of the bugle rang through the fresh morning air. There were eighteen hundred of these horsemen, selected from the best mounted and most trustworthy men in the corps, for they were chosen for an expedition that would need all their resources of alertness, activity, and self-control, no less a one than an invasion of Pennsylvania, a perilous enterprise in which the least error might expose them all to capture or death. On reaching the appointed place of rendezvous, at Darksville, Stuart issued an address in which he advised his followers that the enterprise in which they were to engage demanded the greatest coolness, decision, and courage, implicit obedience to orders, and the strictest order and sobriety. While the full purpose of the expedition must still be kept secret, he said, it was one in which success would reflect the highest credit on their arms. The seizure of private property in the State of Maryland was strictly prohibited, and it was to be done in Pennsylvania only under orders from the brigade commanders, individual plundering being strongly forbidden. These preliminaries adjusted, the march northward began, the command being divided into three detachments of six hundred men each, under the direction of General Wade Hampton, Colonel W. H. F. Lee, and Colonel W. E. Jones. A battery of four guns accompanied the expedition. It was with high expectations that the men rode forward, the secrecy of the enterprise giving it an added zest. Most of them had followed Stuart in daring rides in the earlier months of that year, and all were ready to follow wherever he chose to lead.