Cross-referenced research literature and technical manuals completely matching the keyword registry records for American Civil War.
Robert E. Lee
Marye's Heights: Fredericksburg (Battleground America)
Burnside's Bridge: Antietam (Battleground America)
Fredericksburg 1862: "Clear The Way" (Praeger Illustrated Military History)
United States History
Lee's Lieutenants Volume 3 Gettysburg to Appomattox