The Confederates, early in the spring, had enacted and enforced a conscription law which had resulted in putting every man in the South capable of bearing arms, into the army. At the North--largely because of the defeat of McClellan and Pope in Virginia, and of Halleck's astonishing failure to follow up the Shiloh campaign with aggressive operations--the volunteering had so far ceased that Mr. Lincoln's call for an additional 300,000 men met with a meager and unsatisfactory response. In several states--New York among them--the quotas were not furnished by volunteering and it was necessary to order a draft to fill up the ranks depleted by battle and disease. The North at this time had more than twice as many men in the field as the South could muster. But with every southward advance of Federal armies more and more men must be withdrawn from the active work of aggression and set to guard places captured, to maintain lines of communication and to hold regions that had been overrun. Moreover the Southerners were mainly fighting on the defensive, which in some degree compensated for their lack of equal numbers. Still again the enlistment of every man at the South was to endure to the end of the war, while very large numbers of men at the North were enlisted for shorter terms, some of them for only three months or a hundred days, scarcely time enough in which to discipline and train them into effectiveness. Without offense, also,--and certainly no offense is intended--it is fair to say that the volunteers and conscripts who at this period of the war came into the Confederate service, were in many cases morally superior to the men brought by draft processes into the armies of the Union. They were all Americans for one thing, while great multitudes of those enlisted or drafted into the service at the North were recent immigrants from Europe who neither knew nor cared for the issues involved in the contest but who entered the service as they might have accepted any other employment, for the sake of the money returns promised. These money returns included, besides pay, rations and a clothing allowance, a bounty of extraordinary liberality, amounting in many cases to a larger sum of money than its recipients had ever dreamed of owning, as the price of substitution. For while at the South every man included within the terms of the conscription law must shoulder his musket and go to the front, whatever his wealth or social position might be, the case was very different at the North. There men who had the means of buying a substitute very often did so. Many who lacked the means or were unwilling to pay the high price exacted by those who stood ready to sell themselves as substitutes, emigrated to Canada or went to Europe to escape the military service.