October was a quiet month, each side reorganizing without much interference from the other, except for Stuart's second raid round the whole embattled army of McClellan. This time Stuart took nearly two thousand men and four horse artillery guns. Crossing the Potomac at McCoy's Ford on the tenth he reached Chambersburg that night, destroyed the Federal stores, took all the prisoners he wanted, cut the wires, obstructed the rails, and went on with hundreds of Federal horses. Next day he circled the Federal rear toward Gettysburg, turned south through Emmitsburg, and crossed McClellan's line of communications with Washington at Hyattstown early on the twelfth. By this time the Federal cavalry were riding themselves to exhaustion in vain pursuit; while many other forces were trying to close in and cut him off. But he reached the mouth of the Monocacy and crossed White's Ford in safety, fighting off all interference. The information he brought back was of priceless value. Lee now learned that McClellan was not falling back on Washington but being reinforced from there, and that consequently no new Peninsula Campaign was to be feared at present. This alone was worth the effort, risk, and negligible loss. Stuart had marched a hundred and twenty-six miles on the Federal side of the Potomac--eighty of them without a single halt; and he had been fifty-six hours inside the Federal lines, mostly within four riding hours of McClellan's own headquarters. This second stinging raid roused the loyal North to fury; and by November a new invasion of Virginia was in full swing on the old ground, with McClellan at Warrenton, Lee at Culpeper, and Jackson in the Valley.