Order of Battle: Gettysburg, The Army of the Potomac, is a 9-volume series on the Union forces involved in the Gettysburg Campaign of 1863. Drawing from first-hand accounts, newspapers, original maps, photographs, monuments, battle stats, and commander biographies; the goal of the series is to provide Gettysburg buffs with everything you need to know about each regiment in the Army of the Potomac engaged and involved in the campaign. To walk on the actual ground and to read the accounts of the participants, is the best way to study the Battle of Gettysburg. Volume VI: The Sixth Army Corps, offers an in-depth look at Major General John Sedgwick and the soldiers of the "Greek Cross." While only slightly engaged in the actual battle, the veteran regiments of the Sixth Corps would make one of the most incredible marches on American soil, covering over 35 miles in one day. The Corps' actions are mostly forgotten but are deserving of equal respect of the other units in the army, as they still suffered the hardships of the rigorous campaign as well as serving as a reliable reserve at all crucial points of the battlefield.