The following United States Army units and commanders fought in the Battle of Williamsburg of the American Civil War. The Confederate order of battle is shown separately.
Abbreviations used Military rank MG = Major General BG = Brigadier General Col = Colonel Ltc = Lieutenant Colonel Maj = Major Cpt = Captain Lt = Lieutenant Bvt = Brevet
Other w = wounded mw = mortally wounded k = killed
Army of the Potomac
MG George B. McClellan Commanding in the field: BG Edwin V. Sumner
III Corps
BG Samuel P. Heintzelman
Division Brigade Regiments and OthersSecond Division
BG Joseph Hooker First Brigade
BG Cuvier Grover 2nd New Hampshire: Gilman Marston 1st Massachusetts: Col Robert Cowdin 11th Massachusetts: Col William E. Blaisdell 26th Pennsylvania: Col William F. Small (w), Maj Casper M. Berry Second Brigade
Col Nelson Taylor 70th New York: Col William Dwight (w&c), Maj Thomas Hold 72nd New York: Ltc Israel Moses 73rd New York: Col William R. Brewster 74th New York: Ltc Charles H. Burtis Third Brigade
BG Francis E. Patterson 5th New Jersey: Col Samuel H. Starr 6th New Jersey: Ltc John P. Van Leer (k), Maj George C. Burling 7th New Jersey: Ltc Ezra A. Carman (w), Maj Francis Price, Jr. 8th New Jersey: Col Adolphus J. Johnston (w), Maj Peter H. Ryerson (k) Artillery
Maj Charles S. Wainwright Battery D, 1st New York Artillery: Cpt Thomas W. Osborn 4th New York Battery: Cpt James E. Smith 6th New York Battery: Cpt Walter M. Bramhal Battery H, 1st United States Artillery: Cpt Charles H. WebberThird Division
BG Philip Kearny First Brigade
BG Charles Davis Jameson 57th Pennsylvania: Col Charles T. Campbell 63rd Pennsylvania: Col Alexander Hays 105th Pennsylvania: Col Amor A. McKnight 87th New York: Col Stephen A. Dodge Second Brigade
BG David B. Birney 38th New York: Col J. H. Hobart Ward 40th New York: Col Edward J. Riley 3rd Maine: Col Henry G. Staples 4th Maine: Col Elijah Walker Third Brigade
BG Hiram G. Berry 2nd Michigan: Col Orlando M. Poe 3rd Michigan: Col Stephen G. Champlin 5th Michigan: Col Henry D. Terry 37th New York: Col Samuel B. HaymanArtillery
Cpt James Thompson Battery B, 1st New Jersey Light Artillery: Cpt John E. Beam Battery E, 1st Rhode Island Light Artillery: Cpt George E. Randolph Battery G, 2nd U.S. Artillery: Cpt James Thompson
IV Corps
BG Erasmus D. Keyes
Division Brigade Regiments and OthersFirst Division
BG Darius N. Couch First Brigade
BG Charles Devens 7th Massachusetts: Col David A. Russell 10th Massachusetts: Col Henry S. Briggs 2nd Rhode Island: Col Frank Wheaton 36th New York Second Brigade
BG Lawrence P. Graham 23rd Pennsylvania: Col Thomas H. Neill 31st Pennsylvania: Col David H. Williams 61st Pennsylvania: Col Oliver H. Rippey 65th New York: Ltc Alexander Shaler 67th New York: Ltc Nelson Cross Third Brigade
BG John J. Peck 55th New York: Col P. Regis de Trobriand 62nd New York: Col John L. Riker 93rd Pennsylvania: Col James M. McCarter 98th Pennsylvania: Col John F. Ballier 102nd Pennsylvania: Col Thomas Algeo RowleyArtillery
Maj Robert M. West Battery C, 1st Pennsylvania Light Artillery: Cpt Jeremiah McCarthy Battery D, 1st Pennsylvania Light Artillery: Cpt Edward H. Flood Battery E, 1st Pennsylvania Light Artillery: Cpt Theodore Miller Battery H, 1st Pennsylvania Light Artillery: Cpt James Brady Second Division
BG William F. Smith First Brigade
BG Winfield S. Hancock 5th Wisconsin: Col Amasa Cobb 6th Maine: Col Hiram Burnham 43rd New York: Col Francis L. Vinton 49th Pennsylvania: Col William H. Irwin Second Brigade
BG William T. H. Brooks 2nd Vermont: Col Henry Whitting 3rd Vermont: Col Breed N. Hyde 4th Vermont: Col Edwin H. Stoughton 5th Vermont: Ltc Lewis A. Grant 6th Vermont: Ltc Nathan Lord Third Brigade
BG John Davidson 7th Maine: Col Edwin C. Mason 33rd New York: Col Robert F. Taylor 49th New York: Col Daniel D. Bidwell 77th New York: Col James B. McKean Artillery
Cpt Romeyn B. Ayres 1st New York Battery: Lt Andrew Cowan 3rd New York Battery: Cpt Thaddeus P. Mott Battery E, 1st New York Light Artillery: Cpt Charles C. Wheeler Battery F, 5th U.S. Artillery: Cpt Romeyn B. AyresThird Division
BG Silas Casey First Brigade
BG Henry Morris Naglee 52nd Pennsylvania: Col John C. Dodge, Jr. 104th Pennsylvania: Col William W. H. Davis 56th New York: Col Charles H. Van Wyck 100th New York: Col James M. Brown 11th Maine: Col John C. Caldwell Second Brigade
BG William H. Keim 96th New York: Ltc Charles O. Gray 85th Pennsylvania: Col Joshua B. Howell 101st Pennsylvania: Col Joseph H. Wilson 103rd Pennsylvania: Maj Audley W. Gazzon Third Brigade
BG Innis N. Palmer 81st New York: Ltc Jacob J. De Forest 85th New York: Col Jonathan S. Belknap 92nd New York: Ltc Hiram Anderson, Jr. 93rd New York: Ltc Benjamin C. Butler 98th New York: Col William Dutton Artillery
Col Guilford D. Bailey 7th New York Battery: Cpt Peter C. Regan 8th New York Battery: Cpt Butler Fitch Battery A, 1st New York Artillery: Cpt Thomas H. Bates Battery H, 1st New York Artillery: Cpt Joseph Spratt Cavalry 5th U.S. Cavalry: Maj Joseph H. Whittlesey
Cavalry Advanced Guard BG George Stoneman
Brigade Regiments and Others Cooke's Brigade
BG 1st U.S. Cavalry: Ltc William N. Grier 6th U.S. Cavalry: Maj Lawrence Williams First Brigade
BG William H. Emory 3rd Pennsylvania Cavalry: Col William W. Averell 8th Illinois Cavalry: Col John F. Farnsworth McClellan Dragoons: Maj Charles W. Barker Artillery
Ltc William Hays Batteries B and L, 2nd U.S. Artillery: Cpt James M. Robertson Battery M, 2nd U.S. Artillery: Cpt Henry Benson Battery C, 3rd U.S. Artillery: Cpt Horatio G. Gibson Battery K, 3rd U.S. Artillery: Cpt John C. Tidball
References Hastings, Earl C. and David S. Hastings. A Pitiless Rain: The Battle of Williamsburg, 1862. Shippensburg, Pennsylvania; White Mane Publishing Company, 1997.
Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War, Volume 2 (Pdf), New York: The Century Co., 1887.