On the 6th of December, the following instructions were given:

"CITY POINT, VIRGINIA, December 6, 1864.

"GENERAL: The first object of the expedition under General Weitzel is to close to the enemy the port of Wilmington. If successful in this, the second will be to capture Wilmington itself. There are reasonable grounds to hope for success, if advantage can be taken of the absence of the greater part of the enemy's forces now looking after Sherman in Georgia. The directions you have given for the numbers and equipment of the expedition are all right, except in the unimportant matter of where they embark and the amount of intrenching tools to be taken. The object of the expedition will be gained by effecting a landing on the main land between Cape Fear River and the Atlantic, north of the north entrance to the river. Should such landing be effected while the enemy still holds Fort Fisher and the batteries guarding the entrance to the river, then the troops should intrench themselves, and, by co-operating with the navy, effect the reduction and capture of those places. These in our hands, the navy could enter the harbor, and the port of Wilmington would be sealed. Should Fort Fisher and the point of land on which it is built fall into the hands of our troops immediately on landing, then it will be worth the attempt to capture Wilmington by a forced march and surprise. If time is consumed in gaining the first object of the expedition, the second will become a matter of after consideration.

"The details for execution are intrusted to you and the officer immediately in command of the troops.

"Should the troops under General Weitzel fail to effect a landing at or near Fort Fisher, they will be returned to the armies operating against Richmond without delay.

"U. S. GRANT, Lieutenant-General.
"MAJOR-GENERAL B. F. BUTLER."

General Butler commanding the army from which the troops were taken for this enterprise, and the territory within which they were to operate, military courtesy required that all orders and instructions should go through him. They were so sent, but General Weitzel has since officially informed me that he never received the foregoing instructions, nor was he aware of their existence, until he read General Butler's published official report of the Fort Fisher failure, with my indorsement and papers accompanying it. I had no idea of General Butler's accompanying the expedition until the evening before it got off from Bermuda Hundred, and then did not dream but that General Weitzel had received all the instructions, and would be in command. I rather formed the idea that General Butler was actuated by a desire to witness the effect of the explosion of the powder-boat. The expedition was detained several days at Hampton Roads, awaiting the loading of the powder-boat.

The importance of getting the Wilmington expedition off without any delay, with or without the powder-boat, had been urged upon General Butler, and he advised to so notify Admiral Porter.

The expedition finally got off on the 13th of December, and arrived at the place of rendezvous, off New Inlet, near Fort Fisher, on the evening of the 15th. Admiral Porter arrived on the evening of the 18th, having put in at Beaufort to get ammunition for the monitors. The sea becoming rough, making it difficult to land troops, and the supply of water and coal being about exhausted, the transport fleet put back to Beaufort to replenish; this, with the state of the weather, delayed the return to the place of rendezvous until the 24th. The powder-boat was exploded on the morning of the 24th, before the return of General Butler from Beaufort; but it would seem, from the notice taken of it in the Southern newspapers, that the enemy were never enlightened as to the object of the explosion until they were informed by the Northern press.

On the 25th a landing was effected without opposition, and a reconnoissance, under Brevet Brigadier-General Curtis, pushed up towards the fort. But before receiving a full report of the result of this reconnoissance, General Butler, in direct violation of the instructions given, ordered the re-embarkation of the troops and the return of the expedition. The re-embarkation was accomplished by the morning of the 27th.

On the return of the expedition officers and men among them Brevet Major-General (then Brevet Brigadier-General) N. M. Curtis, First-Lieutenant G. W. Ross, 117th Regiment New York Volunteers, First-Lieutenant William H. Walling, and Second-Lieutenant George Simpson, 142d New York Volunteers voluntarily reported to me that when recalled they were nearly into the fort, and, in their opinion, it could have been taken without much loss.

Soon after the return of the expedition, I received a dispatch from the Secretary of the Navy, and a letter from Admiral Porter, informing me that the fleet was still off Fort Fisher, and expressing the conviction that, under a proper leader, the place could be taken. The natural supposition with me was, that when the troops abandoned the expedition, the navy would do so also. Finding it had not, however, I answered on the 30th of December, advising Admiral Porter to hold on, and that I would send a force and make another attempt to take the place. This time I selected Brevet Major-General (now Major-General) A. H. Terry to command the expedition. The troops composing it consisted of the same that composed the former, with the addition of a small brigade, numbering about one thousand five hundred, and a small siege train. The latter it was never found necessary to land. I communicated direct to the commander of the expedition the following instructions:

"CITY POINT, VIRGINIA, January 3, 1865.

"GENERAL: The expedition intrusted to your command has been fitted out to renew the attempt to capture Fort Fisher, N. C., and Wilmington ultimately, if the fort falls. You will then proceed with as little delay as possible to the naval fleet lying off Cape Fear River, and report the arrival of yourself and command to Admiral D. D. Porter, commanding North Atlantic Blockading Squadron.

"It is exceedingly desirable that the most complete understanding should exist between yourself and the naval commander. I suggest, therefore, that you consult with Admiral Porter freely, and get from him the part to be performed by each branch of the public service, so that there may be unity of action. It would be well to have the whole programme laid down in writing. I have served with Admiral Porter, and know that you can rely on his judgment and his nerve to undertake what he proposes. I would, therefore, defer to him as much as is consistent with your own responsibilities. The first object to be attained is to get a firm position on the spit of land on which Fort Fisher is built, from which you can operate against that fort. You want to look to the practicability of receiving your supplies, and to defending yourself against superior forces sent against you by any of the avenues left open to the enemy. If such a position can be obtained, the siege of Fort Fisher will not be abandoned until its reduction is accomplished, or another plan of campaign is ordered from these headquarters.

"My own views are, that if you effect a landing, the navy ought to run a portion of their fleet into Cape Fear River, while the balance of it operates on the outside. Land forces cannot invest Fort Fisher, or cut it off from supplies or reinforcements, while the river is in possession of the enemy.

"A siege-train will be loaded on vessels and sent to Fort Monroe, in readiness to be sent to you if required. All other supplies can be drawn from Beaufort as you need them.

"Keep the fleet of vessels with you until your position is assured. When you find they can be spared, order them back, or such of them as you can spare, to Fort Monroe, to report for orders.

"In case of failure to effect a landing, bring your command back to Beaufort, and report to these headquarters for further instructions. You will not debark at Beaufort until so directed.

"General Sheridan has been ordered to send a division of troops to Baltimore and place them on sea-going vessels. These troops will be brought to Fort Monroe and kept there on the vessels until you are heard from. Should you require them, they will be sent to you.

"U. S. GRANT, Lieutenant-General.
"BREVET MAJOR-GENERAL A. H. TERRY."

Lieutenant-Colonel C. B. Comstock, aide-de-camp (now brevet brigadier-general), who accompanied the former expedition, was assigned, in orders, as chief-engineer to this.