Immediately upon McClellan's recovery, the President called him to a similar council, and asked him to disclose his plan for {143} a campaign, which he declined to do. Finally the President asked him if he had fixed upon any particular time for setting out; and when he said he had, Mr. Lincoln questioned him no further. A few days later, in a letter to the President, he set forth his plan, which was to move his army down the Potomac on transports, land it at or near Fort Monroe, march up the peninsula between York and James rivers, and attack the defences of Richmond on the north and east sides. The President at first disapproved of this plan, largely for the reason that it would require so much time in preparation; but when he found that the highest officers in the army favored it, and considered the probability that any general was likely to fail if sent to execute a plan he did not originate or believe in, he finally gave it his sanction, and once more set himself to the difficult task of inducing McClellan to move at all. And yet the President himself still further retarded the opening of the campaign by delaying the order to collect the means of transportation. Meanwhile General Johnston quietly removed his stores, and on the 8th of March evacuated Centreville and Manassas, and placed his army before Richmond. This reconciled the President to McClellan's plan of campaign, which he had never liked. The order for the transportation of McClellan's army was issued on the 27th of February, and four hundred vessels were required; for there were actually transported one hundred and twenty-one thousand men, fourteen thousand animals, forty-four batteries, and all the necessary ambulances and baggage-wagons, pontoons and telegraph material. Just before the embarkation, the army was divided into four corps, the commands of which were given to Generals McDowell, Edwin V. Sumner, Samuel P. Heintzelman, and Erasmus D. Keyes. High authorities say this was one of the causes of the failure of the campaign; for the army should have been divided into corps long before, when McClellan could have chosen his own lieutenants instead of having them chosen by the President. General Hooker said it was impossible for him to succeed with such corps commanders. But his near approach to success rather discredits this criticism.