On the 2d of April, at Nashville, I wrote to General Grant, then at Washington, reporting to him the results of my visit to the several armies, and asked his consent to the several changes proposed, which was promptly given by telegraph.  I then addressed myself specially to the troublesome question of transportation and supplies.  I found the capacity of the railroads from Nashville forward to Decatur, and to Chattanooga, so small, especially in the number of locomotives and care, that it was clear that they were barely able to supply the daily wants of the armies then dependent on them, with no power of accumulating a surplus in advance.  The cars were daily loaded down with men returning from furlough, with cattle, horses, etc.; and, by reason of the previous desolation of the country between Chattanooga and Knoxville, General Thomas had authorized the issue of provisions to the suffering inhabitants.

We could not attempt an advance into Georgia without food, ammunition, etc.; and ordinary prudence dictated that we should have an accumulation at the front, in case of interruption to the railway by the act of the enemy, or by common accident.  Accordingly, on the 6th of April, I issued a general order, limiting the use of the railroad-cars to transporting only the essential articles of food, ammunition, and supplies for the army proper, forbidding any further issues to citizens, and cutting off all civil traffic; requiring the commanders of posts within thirty miles of Nashville to haul out their own stores in wagons; requiring all troops destined for the front to march, and all beef-cattle to be driven on their own legs.  This was a great help, but of course it naturally raised a howl.  Some of the poor Union people of East Tennessee appealed to President Lincoln, whose kind heart responded promptly to their request.  He telegraphed me to know if I could not modify or repeal my orders; but I answered him that a great campaign was impending, on which the fate of the nation hung; that our railroads had but a limited capacity, and could not provide for the necessities of the army and of the people too; that one or the other must quit, and we could not until the army of Jos.  Johnston was conquered, etc., etc.  Mr. Lincoln seemed to acquiesce, and I advised the people to obtain and drive out cattle from Kentucky, and to haul out their supplies by the wagon-road from the same quarter, by way of Cumberland Gap.  By these changes we nearly or quite doubled our daily accumulation of stores at the front, and yet even this was not found enough.