The question what should be the work of the Army of the Ohio had naturally interested us who belonged to it, and while Grant was in Washington I prepared and submitted to General Schofield a sketch of a plan of campaign. It was based on the assumption that the Army of the Potomac would not operate by its left along the lowlands of Virginia, as McClellan had done, but would follow the railway through Culpepper and Orange Court House to Richmond. This route was in a high and healthy country, the streams would be crossed where they were comparatively insignificant, and the natural obstacles to an advance seemed much less formidable than upon the coast line. True, the army would have to depend upon the railway for its supplies, but so must Sherman in the West, and the Virginia line was only a fraction of his in length. It had the advantage of covering the Shenandoah valley as it advanced, and saving the large detachment which had to be devoted to that region and to the protection of Washington. But besides this (and this was the feature directly affecting us in East Tennessee), it opened for the Army of the Ohio a rôle of usefulness which seemed to me very important. If Schofield were to take the field in Georgia, he could carry to Sherman, at most, some twelve or fourteen thousand infantry and six or eight of cavalry. The proper protection of Kentucky and East Tennessee required just about the same number of troops. His active column in the decisive campaign would therefore be only half of the forces in his department. Whenever it should be apparent that Georgia was our field of operations, Longstreet's twenty thousand men would be set free to join Lee in Virginia (as actually happened), or could be used in any other theatre of operations, whilst our garrisons could not be greatly reduced because small raids of mounted men could harry the wide expanse of country behind us unless all the important points were fully guarded. This also was demonstrated by our actual experience, and was a plain deduction from facts and principles. To drive Longstreet into Virginia and destroy the railroad so that he could not return was, therefore, to force the enemy to do the thing most advantageous to himself; that is, to concentrate his forces at the East in entire security that he would not be troubled by any advance on our part into southwestern Virginia.