The Oxford Companion to American Military History;

With more than 1,100 entries written by some 500 distinguished contributors, The Oxford Companion to American Military History is "the most comprehensive treatment of American military history ever compiled" (Parameters: U.S. Army War College Quarterly) and an "easy-to-browse, well-organized work" (The Washington Post).

Here is a gold mine of information on American military history, exploring battles and soldiers, ships and weapons, services and doctrines--as well as the social and cultural impact of the U.S. military at home and around the world.
The Oxford Companion to American Military History boasts over 1,100 entries written by some 500 distinguished contributors. Readers will find Stephen E. Ambrose writing on the D-Day landing, James M. McPherson on the battle of Antietam, John Keegan on the changing experience of combat, Jean Bethke Elshtain on Jane Addams, Mark A. Noll on religion and war, and Robert M. Utley on Sitting Bull. Ranging from brief factual pieces to extensive essays, the entries examine every major war from the Revolution to the Persian Gulf; important battles from Bunker Hill, to the Alamo, Gettysburg, Little Bighorn, Normandy, and Khe Sanh; and military leaders from Washington to Grant, Lee, Eisenhower, MacArthur, Westmoreland, and Schwarzkopf. Moreover, the Companion goes well beyond the usual "drum and trumpet" coverage to examine a wide range of subjects you might not expect to find. There are entries on relevant acts of Congress and on diplomatic policies such as the Monroe Doctrine and the Marshall Plan; on peace and antiwar movements; on war in film, literature, music, and photography; and on war viewed through the disciplinary lenses of anthropology, economics, gender studies, and psychology. The result is the widest ranging account compiled in one volume of war, peace, and the U.S. military.
With over a thousand authoritative and vividly written entries, maps of several major wars, extensive cross-referencing, lists of further readings, and an index, this volume is the first place to turn for information on our nation's military history.