For the rest, both armies were made up of volunteers, men wholly unused to military discipline and wholly untrained in that subjection of their own minds and wills to superior authority which constitutes the distinction between the soldier and the raw recruit--between an army and an armed mob. They were brave fellows, all of them. They were devoted to the causes they severally served, but they were not yet soldiers. They retained the unsoldierly habit of thinking and judging for themselves, where they should instead have let their officers think and judge for them. Under the discipline of service and of fighting they presently reduced themselves to the ranks, as it were, and became soldiers equal and even superior to the best regulars that any army on earth has ever brought into the field. Their deeds at Cold Harbor, at Fredericksburg, at Chancellorsville, in the Wilderness, at Petersburg, at Antietam, at Gettysburg, and on a score of other desperately contested battlefields leave no possible room for doubt that the men who composed the Federal and Confederate armies were the peers and even the superiors of any other men who ever fought anywhere. But at the first they were not such. They were undisciplined and subject to such panics as that sort of individual thinking in which they indulged is inevitably bound to produce. It is important to bear these facts in mind if we would read the early history of the war understandingly. The first blood shed in the war, however, was not shed in formal military action. On the nineteenth of April, two days after Virginia's secession, a Baltimore mob assailed a Massachusetts regiment on its passage through the Maryland city to Washington, and several persons were killed in the melée. It is not historically recorded that any of the men who constituted the mob and made the assault ever afterwards served in the Confederate army. On the contrary there is every reason to believe that these men, so ready for mob violence, very carefully avoided a service in which legitimate fighting was to be the daily routine of life. That, however, is a detail--illustrative, perhaps, but not otherwise important to history. The secession of Virginia carried with it one event of vital and even of supreme importance, namely, the secession of Robert E. Lee, without whose genius the Confederate War would almost certainly have ended in McClellan's capture of Richmond in the summer of 1862.