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Commanded by Major General Joseph Hooker
The Ninth Corps left the Army of the Potomac. Its 3rd Division transferred to the Department of Virginia and its 1st and 2nd Divisions were transferred to the Department of the Ohio.
Headquarters |
||
| Headquarters Staff | ||
| Chief of Artillery | Brigadier General Henry J. Hunt | |
| Inspector General | Colonel Delos B. Sacket | |
| Chief Quartermaster | Lieutenant Colonel Rufus Ingalls | |
| Medical Director | Surgeon Jonathan Letterman | |
| Guards & Orderlies | ||
| Oneida (New York) Cavalry Company | Captain Daniel P. Mann | |
| Provost Guard | Major William H. Wood | |
| 93rd New York Infantry, Cos. AFH&K | Colonel John S. Crocker | |
| 8th United States Infantry, Cos. ABDF&G | Captain Royal T. Frank | |
|
Provost Guard-Patrick’s Brigade |
Colonel William F. Rogers | |
| 21st New York Infantry Regiment | Lt. Colonel Chester W. Steainberg | |
| 23rd New York Infantry Regiment | Colonel Henry C. Hoffman | |
| 35th New York Infantry Regiment | Colonel John G. Todd | |
| 80th New York Infantry Regiment | Colonel Theodore B. Gates | |
| Maryland Light Artillery, Battery B | Captain Alonzo Snow | |
| 12th Battery Ohio Light Artillery | Captain Aaron C. Johnson | |
| Engineer Brigade | Brigadier General Daniel Woodbury | |
| 15th New York Engineer Regiment | Colonel John M. Murphy | |
| 50th New York Engineer Regiment | Lieutenant Colonel William H. Pettes | |
| Regular Engineer Battalion | Captain James C. Duane | |
| Siege Artillery | ||
| 1st Connecticut Heavy Artillery, AB&M | Brigadier General Randolph B. Marcy | |
| Reserve Artillery | ||
| 32nd Massachusetts Infantry, Co. C | Captain Josiah C. Fuller | |
| 1st Battalion New York Artillery, Co. A | Captain Otto Diederichs | renamed 29 New York Independent Battery |
| 1st Battalion New York Artillery, Co. B | Captain Adolph Voegelee | renamed 30 New York Independent Battery |
| 1st Battalion New York Artillery, Co. C | Lieutenant Bernhard Wever | renamed 31 New York Independent Battery |
| 1st Battalion New York Artillery, Co. D | Captain Charles Kusserow | renamed 32 New York Independent Battery |
| 5th New York Independent Battery | Captain Elijah D. Taft | |
| 15th New York Independent Battery | ||
| 1st United States Artillery, Battery K | Captain William M. Graham | |
| 4th United States Artillery, Battery G | Lieutenant Marcus P. Miller | |
| 5th United States Artilery, Battery K | ||
First Corps |
Brigadier General James S. Wadsworth (to 3/9) Major General John F. Reynolds |
|
| 1st Division | Brigadier General Solomon Meredith (3/1) Brigadier General Gabriel Paul (to 3/9) Brigadier General John S. Wadsworth |
|
| 2nd Division | Brigadier General John C. Robinson | |
| 3rd Division | Major General Abner Doubleday | |
Second Corps |
Major General Darius N. Couch |
|
| 1st Division | Major General Winfield S. Hancock | |
| 2nd Division | Major General Oliver O. Howard | |
| 3rd Division | Major General William H. French | |
Third Corps |
Major Gen. Daniel Sickles |
|
| 1st Division | Brigadier General David Birney | |
| 2nd Division | Brigadier General Hiram Berry | |
| 3rd Division | Brigadier General Amiel W. Whipple | |
Fifth Corps |
Major General George Meade | |
| 1st Division | Brigadier General Charles Griffin | |
| 2nd Division | Major General George Sykes | |
| 3rd Division | Brigadier General Andrew A. Humphreys | |
Sixth Corps |
Major General John Sedgwick |
|
| 1st Division | Brigadier General W. T. H. Brooks | |
| 2nd Division | Brigadier General Albion P. Howe | |
| 3rd Division | Brigadier General John Newton | |
Ninth Corps |
Major General William F. Smith (to 3/17) Major General Ambrose Burnside |
|
| 1st Division | Brigadier General Orlando B. Wilcox | to Dept. Ohio 3/19 |
| 2nd Division | Brigadier General Edward Ferrero | to Dept. Ohio 3/19 |
| 3rd Division | Brigadier General George W. Getty | to Dept. of Virginia 3/2 |
Eleventh Corps |
Brigadier General Adolph Von Steinwehr (to 3/5) Major General Carl Schurz |
|
| 1st Division | Brigadier General Julius H. Stahel (to 3/10) Brigadier General Nathaniel C. McLean |
|
| 2nd Division | Colonel A. Bushbeck (to 3/5) Brigadier General Adolph Von Steinwehr (to 3/28) Colonel A. Bushbeck |
|
| 3rd Division | Brigadier General Carl Schurz (to 3/5) Brigadier General Alexander Schimmelfenning |
|
Twelfth Corps
|
Major General Henry W. Slocum |
|
| 1st Division | Brigadier General Alpheus Williams | |
| 2nd Division | Brigadier General John W. Geary | |
Cavalry Corps |
Major General George Stoneman | |
| 1st Division | Brigadier General Alfred Pleasonton |
|
| 2nd Division | Brigadier General W. W. Averill | |
| 3rd Division | Brigadier General David McM. Gregg | |