Amidst many choices, a highly acclaimed 2013 publication is Gettysburg,The Last Invasion by Allen Guelzo of Gettysburg College. Called a “brilliant new history”, the book covers 19^th century linear warfare at the soldiers level and the amateur armies who faced those awful combats. His writing about the effects of close order tactics in an age of ranged weapons is harrowing. He includes studies of the congressional politics afflicting General Meade and the coterie of commanders who supported or undercut him. This book is expected to please amateur and professional historians alike.