Matt Spruill III is a retired U. S. Army colonel and Civil War historian and lecturer. A former Gettysburg licensed battlefield guide he is the author of eight previously Civil War books including most recently Decisions at Stones River: The Sixteen Critical Decisions That Defined the Battle and Summer Lightning: A Guide to the Second Battle of Manassas.

Matt Spruill IV is a retired U. S. Army lieutenant colonel and vice-president of a company in the modeling, simulation and training industry. He is the author of two previous books, Summer Lightning: A Guide to the Second Battle of Manassas and Echoes of Thunder: A Guide to the Seven Days Battles.