June 1863 • to July >
>This section under construction<
The Department of the Susquehanna was created on June 9, 1963 in response to the Confederacy’s developing invasion of Maryland and Pannsylvania. The Department consisted of all troops east of Johnstown and the Laurel Highlands in Pennsylvania, with headquarters in Chambersburg. The troops were intended to consist of newly raised militia units bolstered by a few veteran regiments.
Commanded by Major General Darius N. Couch
| 1st Brigade, 1st Division (Dana) | Yates | |
| 8th New York National Guard | Colonel Joshua M. Varian | from New York 6/19 |
| 5th New York National Guard | Colonel Louis Burger | from New York 6/19 |
| 2nd Brigade | ||
| 13th New York National Guard | Colonel John B. Woodward | from New York 6/19 |
| 28th New York National Guard | Colonel Michael Bennett | from New York 6/20 |
| 3rd Brigade | ||
| 23rd New York National Guard | Colonel William Everdell, Jr. | from New York 6/19 |
| 52nd New York National Guard | Colonel Matthias Cole | from New York 6/19 |
| 56th New York National Guard | Colonel John Q. Adams | from New York 6/120 |
| 4th Brigade | ||
| 11th New York National Guard | Colonel Joachim Maidhof | from New York 6/19 |
| 22nd New York National Guard | Colonel Lloyd Aspinwall | from New York 6/19 |
| 37th New York National Guard | Colonel Charles Roome | from New York 6/19 |
| 5th Brigade | ||
| 68th New York National Guard | Colonel David S. Forbes, | from New York 6/24 |
| Pierce’s Brigade | ||
| 1st New York Cavalry Regiment | Colonel Andrew T. McReyolds | from Middle Dept. (8 Corps) |
| 12th Pennsylvania Cavalry Regiment | from Middle Dept. (8 Corps) | |
| York | ||
| Patapsco Maryland Guards | from Middle Dept. (8 Corps) | |
| Unassigned or unknown | ||
| 4th New York National Guard | Colonel Daniel W. Teller | organized Harrisburg 6/18 |
| 67th New York National Guard | Colonel Chauncey Abbott | from New York 6/26 Mustered out 8/3 |
| 74th New York National Guard | Colonel Watson A. Fox | organized Harrisburg 6/19 |
| 26th Pennsylvania Militia Infantry | Colonel William S. Jennings | organized Harrisburg 6/22 engagement Gettysbug 6/26 |