I was told by General Hooker that General McClellan had informed him that any one he should recommend for Brigadier-General should be appointed, and that I might expect mine in the course of ten days. It so happened that Gov. Andrew in a few days after made it convenient to be in Washington; and there was a prevalent rumor in camp at that time that he was there to oppose my nomination, but whether or not I am unable to say, but will leave the public to decide as the appointment was not made at that time, and I did not receive it for more than eleven months after. About this time Senator Wilson, in command of the 22d Regiment at Halls Hill, Va., one Sunday afternoon, called on one of his Captains, and, in course of conversation, my recommendation by General Hooker was discussed, when Senator Wilson said: “Col. Cowdin will never be confirmed by the Senate.”

On hearing of my recommendation by Gen. Hooker, the Mayor, Aldermen, and Common Council, in both branches of which I had been a member, very kindly forwarded a petition from their respective Boards to the President, urging my appointment. A short time after this three more petitions were gotten up, one by the Honorable Senate and House of Representatives, one from the leading men of Boston, and one from the War Committee; these petitions were all sent to a Massachusetts Senator to be presented to the President, but in my heart I firmly believe that he (the President) never saw them. It is presumed that they were either destroyed or kept in abeyance. On the 8th of January, Mayor Opdyke of New York wrote the following letter in my behalf:—

Mayor’s Office, New York, January 8, 1862.

Abraham Lincoln, President of the United States:—

Sir: The friends of Colonel Robert Cowdin of the First Massachusetts Regiment, now acting Brigadier-General of Hooker’s Division, are very desirous that he should receive the appointment of Brigadier-General of Volunteers. He is so highly recommended by General Hooker upon purely military grounds, and by the Mayor and City Council of Boston, who have long known him intimately, and with whom he has served in both branches, that there can be no question as to his character or capacity. Added to this testimony is the practical commentary furnished by the high character for discipline and efficiency attained by Colonel Cowdin’s Regiment, and which it is understood characterizes the entire Brigade of which Colonel Cowdin is now in command. The appointment of Colonel Cowdin to a Brigadier-Generalship would seem to be from public consideration one of the best that could be made. This is a consideration which at this time cannot fail to prove potent with Your Excellency. I take pleasure in requesting your special attention to General Hooker’s letter, of which a printed copy is appended. The appointment of Colonel Cowdin will be to me personally a source of high gratification.

Very respectfully, your obedient servant,
GEORGE OPDYKE.

This letter was given to Senator Sumner, with the request that he should immediately present it to the President in person, which he agreed to do; but it was kept back by him, from his own acknowledgment, for more than eight months; the reason is best known to himself; but it is presumed, however, that Senator Wilson advised him not to present it, and informed him, as he had two of my personal friends, (he taking them to be otherwise,) that my case was closed, and that he had closed it for me. During the winter, Senator Wilson was in Boston, and the subject of my promotion was discussed in the Republican Headquarters, when he made a public declaration, in the presence of several gentlemen, that I could not be confirmed by the Senate even if I was appointed. I continued in command of the Brigade until the 19th of February, when I was relieved, by Brig.-Gen. Henry M. Naglee, an officer of distinguished ability. He has since, as I am informed, been mustered out of the service for his political opinions. On or about the 20th of September, Hon. John P. Hale, Senator from New Hampshire, seeing the injustice that had been done me, laid my case before the President, and requested him to appoint me. The President told him that no more appointments could be made, except for distinguished conduct in the field. Mr. Hale then related the engagements I had been in, and particularly mentioned that of Williamsburg; and in about four days from that time I received my appointment, of which the following is a copy:—

War Department, Washington, Sept. 26, 1862.

Sir: You are hereby informed that the President of the United States has appointed you, for distinguished conduct at the battle of Williamsburg, Brigadier-General of Volunteers in the service of the United States, to rank as such from the twenty-sixth day of September, one thousand eight hundred and sixty-two. Should the Senate, at their next session, advise and consent thereto, you will be commissioned accordingly.

Immediately on receipt hereof please to communicate to this Department, through the Adjutant-General of the Army, your acceptance or non-acceptance, and with your letter of acceptance return the oath herewith enclosed, properly filled up, subscribed and attested, and report your age, birthplace, and the State of which you were a permanent resident.