ADDENDA BY THE EDITOR. Organization of the Army of the Potomac, commanded by MAJOR-GENERAL JOSEPH HOOKER, in the Chancellorsville Campaign, May 1-5, 1863. GENERAL HEAD-QUARTERS. PROVOST GUARD. Colonel William F. Rogers. 1st Maryland Light Artillery, Battery B. 21st New York. 23d New York. 35th New York. 15th New York. 80th New York. Ohio Light Artillery, 12th Battery. 8th U. S. Infantry, Company G. HEADQUARTERS GUARD. ENGINEER BRIGADE. Brigadier-general Henry W. Benham. 50th New York. SIGNAL CORPS. Captain S. T. Cushing. GUARDS AND ORDERLIES. Lieutenant-colonel Rufus Ingalls. Battalion United States. Independent Company Oneida (N. Y.) Cavalry. ARTILLERY. Brigadier-general Henry J. Hunt. ARTILLERY RESERVE. Captain William M. Graham. 1st Connecticut Heavy Artillery, Bat. B. 1st Connecticut Heavy Artillery, Bat. M. New York Light Artillery, 5th Battery. New York Light Artillery, 15th Battery. New York Light Artillery, 29th Battery. New York Light Artillery, 30th Battery. Vol. III.-55 New York Light Artillery, 32d Bat. 865 (1) Brig.-gen. Joseph B. Carr. (1) Brig.-gen. Joseph W. Revere. (2) Colonel Williain Blaisdell. (2) Colonel J. Egbert Farnum. Third Brigade. (1) Brig.-gen. Gershom Mott (2) Colonel Wm. J. Sewell. 5th New Jersey. 6th New Jersey. 8th New Jersey. 1st U. S. Artillery, Battery H. 4th U. S. Artillery, Battery K. THIRD DIVISION. (1) Brigadier-general Amiel W. Whipple.|| First Brigade. Colonel Emlen Franklin. Second Brigade. Colonel Samuel M. Bowman. 12th New Hampshire. Artillery. (1) Captain Albert A. Von Puttkammer. (2) Captain James F. Huntington. New York Light Artillery, 10th Battery. New York Light Artillery, 11th Battery. * Assigned to command of 3d Division May 4. Assigned to command May 3. Third Brigade. Colonel Hiram Berdan. 1st U. S. Sharpshooters. 2d U. S. Sharpshooters. 1st Ohio Light Art., Battery H. Wounded May 3. + Killed May 3. Wounded May 4. Brig.-gen. Romeyn B. Ayres. 3d U. S. Inf., Cos. B, C, F, G, I and K. 4th U. S. Inf., Cos. C, F, H and K. 12th U. S. Inf., Cos. A, B, C, D, G (1st Battln.), A, C and D (2d Battln.). 14th U. S. Inf., Cos. A, B, D, E, F, G (1st Battln.), F and G (2d Battln.). Third Brigade. Colonel Patrick H. O'Rorke. 5th New York. Second Brigade. Colonel Sidney Burbank. 2d U. S. Inf., Cos. B, C, F, I and K. 6th U. S. Inf., Cos. D, F, G, H and I. 7th U. S. Inf., Cos. A, B, E and I. 10th U. S. Inf., Cos. G and H. 11th U. S. Inf., Cos. B, C, D, E, F, G (1st Battln.), C and D (2d Battln.). 17th U. S. Inf., Cos. A, C, D, G, H (1st Battln.), A and B (2d Battln.). Artillery. Captain Stephen H. Weed. 1st Ohio Light Artillery, Battery L. 5th U. S. Artillery, Battery I. THIRD DIVISION. Brigadier-general Andrew A. Humphreys. First Brigade. Brig.-gen. Erastus B. Tyler. 91st Pennsylvania. 126th Pennsylvania. 129th Pennsylvania. 134th Pennsylvania. Second Brigade. Colonel Peter H. Allabach. 123d Pennsylvania. * Disabled May 4. Artillery. Captain Alanson M. Randol. 1st N. Y. Lt. Art., Bat. C. 1st U. S. Artillery, Bat. E |