Here, for the first time, the fighting done by Hilliard’s Legion, a part of Archibald Gracie’s Brigade of Alabama Confederates, is examined in detail. Lee Elder’s research shows conclusively that Gracie’s command was never forced from the berm at the top of the Horseshoe Ridge and that some men from Hilliard’s Legion penetrated to the top of the Ridge. Using period sources not generally cited by other researchers, including letters from Legion members, this study sheds new light on the Legion’s role in the conclusion of the battle. It spotlights the previously untold history of a small number of Gracie’s men who joined another Confederate brigade in the final movement of the battle that resulted in the surrender of more than 200 Union soldiers. Readers will explore some of the controversies surrounding the Battle of Chickamauga, and follow the Legion’s history before and after it climbed Horseshoe Ridge. The notation on a Congressional Medal of Honor is corrected and the Legion’s post-war contributions are explored. The text is followed by a complete roster of Hilliard’s Legion with biographical notes on most of the soldiers.