- Christien Anholt
- Terry O'Neil
- Andre Braugher
- Lucius
- Dan Futterman
- Shelby Peyton
- Josh Lucas
- George Armstrong Custer
- Clive Owen
- Devin O'Neil
- Sophie Ward
- Shannon O'Neil
- Sue-Ann Leeds
- Rose O'Neal Greenhow
- Laura Linney
- Lily Magraw
- Niall O'Brien
- James O'Neil (Da)
- Paul Guilfoyle
- General Beauregard
- Dana Ivey
- Mrs. Julia Peyton
- Timothy Scott
- (as Tim Scott)
- Beverly Todd
- Hannah
- Len Cariou
- Dr. Leland Peyton
- Mark Pellegrino
- Skinner
- Peter Murnik
- Upton
- Barry Cullison
- Sgt. Yancy
- Robert Newman
- Capt. Wykoff
- Lorraine Toussaint
- Sarah
- Scott Burkholder
- Garrett St. Clair
- Penny Johnson Jerald
- Lavinia
- James MacDonald
- (as James G. McDonald)
- Stephen Root
- Secretary of War Edwin Stanton
- Rus Blackwell
- Yelling Cadet
- Laura Carney
- Mrs. H. Vann Stratten
- Michael Genevie
- William Avery
- RaéVen Kelly
- Statie
- Jim Moyle
- Pierce Cadet
- John P. Navin Jr.
- Barnett
- Tom Nowicki
- Maj. Palmer
- Jim Peck
- Chaplain French
- Tim Powell
- Confederate Chaplain
- Mary Nell Santacroce
- Washington Matron
- Andy Stahl
- Major Berry
- Alex Van
- Towny
- Jordan Williams
- Provost Officer
- Bob Bass
- Cadet
- Mark Evans
- Cadet
- Shane Pinson
- Confederate Soldier
- Clarinda Ross
- Allegra Peyton
- Tim Ware
- Surgeon #3
- Rodger Williamson
- Union Cavalryman
