Williamsburg Union order of battle
Introduction 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. McClellanCommanding 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.