HEADQUARTERS MILITARY DIVISION OF THE MISSISSIPPI,

I send by Colonel Porter all official reports which are completed, and will in a few days submit a list of names which are deemed worthy of promotion.

I think we owe it to the President to save him the invidious task of selection among the last number of worthy applicants, and have ordered my army commanders to prepare their lists with great care, and to express their preferences, based upon claims of actual capacity and services rendered.

These I will consolidate, and submit in such a form that, if mistakes are made, they will at least be sanctioned by the best contemporaneous evidence of merit, for I know rat vacancies do exist equal in number to that of the officers who really deserve promotion.

As to the future, I am pleased to know that your army is being steadily reinforced by a good class of men, and I hope it will go on until you have a force that is numerically double that of your antagonist so that that with one part you can watch him, and with the other push out boldly from your left flank, occupy the Southside Railroad, compel him to attack you in position, or accept battle on your own terms.

We ought to ask our country for the largest possible armies that can be raised, as so important a thing as the self-existence of a great nation should not be left to the fickle chances of war.

Now that Mobile is shut out to the commerce of our enemy, it calls for no further effort on our part, unless the capture of the city can be followed by the occupation of the Alabama River and the railroad to Columbus, Georgia when that place would be a magnificent auxiliary to my further program into Georgia; but, until General Canby is much reenforced, and until he can more thoroughly subdue the scattered armies west of the Mississippi, I suppose that much cannot be attempted by him against the Alabama River and Columbus, Georgia.

The utter destruction of Wilmington, North Carolina is of importance only in connection with the necessity of cutting off all foreign trade to our enemy, and if Admiral Farragut can get across the bar, and move quickly, I suppose he will succeed. From my knowledge of the mouth of Cape Fear River, I anticipate more difficulty in getting the heavy ships across the bar than in reaching the the town of Wilmington; but of course, the soundings of the channel are well known at Washington, as well as the draught of his iron-clads, so that it must be demonstrated as to be feasible, or else it would not be attempted. If successful, I suppose that Fort Caswell be occupied, and the fleet at once sent to the Savannah River. Then the reduction of that city is the next question. It once in our possession, and the river open to us, I would not hesitate to cross the State of Georgia with sixty thousand men, hauling some stores, and depending on the country for the balance. Where a million of people find substance, my army won't starve; but as you know, in a country like Georgia, with few roads and innumerable streams, an inferior force can so delay an army and harass it, that it would not be a formidable object; but if the enemy knew that we had our boats in the Savannah River I could rapidly move to Milledgeville, where there is abundance of corn and meat, and could so threaten Macon and Augusta that the enemy would doubtless give up Macon fair Augusta; then I would move so as to interpose between Augusta and Savannah, and force him to give us Augusta, with the only powder-mills and factories remaining in the South, or let us have the use of the Savannah River. Either horn of the dilemma will be worth a battle. I would prefer his holding Augusta (as the probabilities are); for then, with the Savannah River in our possession, the taking of Augusta would be a mere matter of time. This campaign can be made this winter.

But the more I study the game, the more I am convinced that it would be wrong for us to penetrate farther into Georgia without an objective beyond. It would not be productive of much good. I can start east and make a circuit south and back, doing vast damage to the State, but resulting in no permanent good; and by mere threatening to do so, I hold a rod over the Georgians, who are not over loyal to the South. I will therefore give it as my opinion that your army and Canby's should be reenforced to the maximum; that after you get Wilmington, you should strike for Savannah and its river; that General Canby should hold the Mississippi River, and send a force to take Columbus, Georgia, either by way of the Alabama or Appalachicola River; that I should keep Hood employed and put my army in fine order for a march on Augusta, Columbia, and Charleston; and start as soon as Wilmington is sealed to commerce, and the city of Savannah is in our possession.

I think it will be found that the movements of Price and Shelby, west of the Mississippi, are mere diversions. They cannot hope to enter Missouri except as raiders; and the truth is, that General Rosecrans should be ashamed to take my troops for such as purpose. If you will secure Wilmington and the city of Savannah from your centre, and let General Canby have command over the Mississippi River and country west of it, I will send a force to the Alabama and Appalachicola, provided you give me one hundred thousand of the drafted men to fill up my old regiments; and if you will fix a day to be in Savannah, I will insure our possession of Macon and a point on the river below Augusta. The possession of the Savannah River is more than fatal to the possibility of Southern independence. They may stand the fall of Richmond, but not all of Georgia.

I will have a long talk with Colonel Porter, and tell him every thing that may occur to me of interest to you.

In the mean time, know that I admire your dogged perseverance and pluck more than ever. If you can whip Lee and I can march to the Atlantic, I think Uncle Abe will give us a twenty days' leave of absence to see the young folks. Yours as ever,