Nature of War

The Face of Battle by John Keegan

The Forgotten Soldier by Sajer

We Were Soldiers Once, and Young by Harold Moore and Joe Galloway

Killer Angels by Michael Shaara

The Great War and Modern Memory by Paul Fussell

Somme by Lyn MacDonald

Memoirs of Sherman by W.T. Sherman

The Price of Glory by Alistair Horne

To Lose A Battle by Alistair Horne

Embattled Courage by Gerald F. Linderman

The Mask of Command by John Keegan

Military History

At Dawn We Slept by Gordon Prange

History of the U.S. Army by Russell F. Weigley

The Forgotten War by Clay Blair

This Kind of War by Fehrenbach

Theory of War

On War by Clausewitz

Sun Tzu The Art of War edited by Samuel Griffith

The Art of War by Jomini

Strategy

Strategy by Liddell Hart

Arms and Influence by Thomas Schelling

On Strategy by Harry Summers

Makers of Modern Strategy edited by Peter Paret

Future of Warfare

War and Anti-War by Alvin and Heidi Toffler

The Transformation of War by Martin Van Creveld

Military Ethos

The Long Gray Line by Rick Atkinson

A Bright Shining Lie by Neil Sheehan

Operational Art

Lost Victories by Eric von Manstein

Memories of U.S. Grant by U.S. Grant

Defeat Into Victory by Field Marshall Sir William Slim

Combined Arms Warfare

Panzer Battles by von Mellenthin

Guderian: Creator of the Blitzkrieg by Kenneth Macksey

Modern Warfare

Crusade by Rick Atkinson