[endorsement: [undecipherable] at War March 27. 1799 Rec'd too be acknowledged War Department] Major Gen^l Alexander Hamilton, New York. --- War Department, March 27^th 1799. Sir, Inclosed is a letter to the Adjutant General informing him that his presence and aid is considered essential to the due performance of the duties to be fulfilled by you, and placing him under your Orders. On looking over your letter of the 23^rd and my reply, I find I have omitted to approve formally, the numbers which you proposed to designate the new Regiments by. The arrangement of the Regiments and their numbers being approved of, you will give the necessary information to their respective Commandants. I have the honor to be, with great respect, Sir, Your Obed^t Servant James McHenry Major General Alexander Hamilton