March 1862 • to April >
Commanded by Brigadier General Erasmus D. Keyes
The 4th Corps was created on March 3, 1862 and announced March 13, 1862.
First Division | Brigadier General Darius N. Couch | |
1st Brigade | Colonel H. S. Briggs | |
2nd Brigade | Brigadier General L. P. Graham | |
3rd Brigade | Brigadier General J. J. Peck | |
Second Division | Brigadier General William F. Smith | |
1st Brigade | Brigadier General Winfield S. Hancock | |
2nd Brigade | Brigadier General W. T. H. Brooks | |
3rd Brigade | Brigadier General J. W. Davidson | |
Third Division | Brigadier General Silas Casey | |
1st Brigade | Brigadier General H. M. Naglee | |
2nd Brigade | Brigadier General William H. Keim | |
3rd Brigade | Brigadier General I. N. Palmer | |
Cavalry | ||
8th Pennsylvania Cavalry Regiment | Colonel David McM. Gregg | from Porter’s Division |