A letter written by Lincoln on the 13th of October shows a wonderfully accurate understanding of military conditions, and throws light also upon the character and the methods of thought of the two men: "Are you not overcautious when you assume that you cannot do what the enemy is constantly doing? Should you not claim to be at least his equal in prowess, and act upon the claim? As I understand, you telegraphed General Halleck that you cannot subsist your army at Winchester unless the railroad from Harper's Ferry to that point be put in working order. But the enemy does now subsist his army at Winchester, at a distance nearly twice as great as you would have to do, without the railroad last named. He now waggons from Culpeper Court House, which is just about twice as far as you would have to do from Harper's Ferry. He is certainly not more than half as well provided with waggons as you are.... Again, one of the standard maxims of war, as you know, is to 'operate upon the enemy's communications without exposing your own.' You seem to act as if this applies against you, but cannot apply it in your favour. Change positions with the enemy, and think you not he would break your communication with Richmond in twenty-four hours?... You are now nearer Richmond than the enemy is by the route you can and he must take. Why can you not reach there before him, unless you admit that he is more than your equal on a march? His route is the arc of a circle, while yours is the chord. The roads are as good on your side as on his ... If he should move northward, I would follow him closely, holding his communications. If he should prevent our seizing his communications and move towards Richmond, I would press closely to him, fight him, if a favourable opportunity should present, and at least try to beat him to Richmond on the inside track. I say 'Try'; if we never try, we shall never succeed.... If we cannot beat him when he bears the wastage of coming to us, we never can when we bear the wastage of going to him.... As we must beat him somewhere or fail finally, we can do it, if at all, easier near to us than far away.... It is all easy if our troops march as well as the enemy, and it is unmanly to say that they cannot do it." The patience of Lincoln and that of the country behind Lincoln were at last exhausted. McClellan was ordered to report to his home in New Jersey and the General who had come to the front with such flourish of trumpets and had undertaken to dictate a national policy at a time when he was not able to keep his own army in position, retires from the history of the War.