The Encyclopedia of the Wars of the Early American Republic, 1783–1812: A Political, Social, and Military History [3 volumes]

Losing Iraq: Insurgency and Politics

Modern Conflict in the Greater Middle East: A Country-by-Country Guide

Enduring Controversies in Military History: Critical Analyses and Context [2 volumes]

World War I: The Essential Reference Guide

The Encyclopedia of Middle East Wars: The United States in the Persian Gulf, Afghanistan, and Iraq Conflicts [5 volumes]

The Encyclopedia of the Cold War: 5 volumes [5 volumes]

Pearl Harbor: The Essential Reference Guide

American Civil War: The Definitive Encyclopedia and Document Collection [6 volumes]

World War II: The Definitive Encyclopedia and Document Collection [5 volumes]

The Encyclopedia of the Spanish-American and Philippine-American Wars: A Political, Social, and Military History [3 volumes]

World War II at Sea: An Encyclopedia [2 volumes]

500 Great Military Leaders: [2 volumes]

The Civil War Naval Encyclopedia: [2 volumes]

Persian Gulf War Encyclopedia: A Political, Social, and Military History

Encyclopedia of Insurgency and Counterinsurgency: A New Era of Modern Warfare

A Global Chronology of Conflict: From the Ancient World to the Modern Middle East [6 volumes]

The Cold War: The Definitive Encyclopedia and Document Collection [5 volumes]

Weapons and Warfare: From Ancient and Medieval Times to the 21st Century [2 volumes]

U.S. Conflicts in the 21st Century: Afghanistan War, Iraq War, and the War on Terror [3 volumes]