"This two-volume encyclopedia surveys the participation of 22 countries that played a key role in World War I: Australia, Austria-Hungary, Belgium, Bulgaria, China, Canada, France, Germany, Great Britain, Greece, India, Italy, Japan, Montenegro, New Zealand, the Ottoman Empire, Portugal, Romania, Russia, Serbia, the Union of South Africa, and the US. Each entry describes background information on the country, the reasons behind its entry into the war, its combat effort, the homefront experience, and the war's impact, as well as each country's military and key government and military leaders. The encyclopedia includes a section on 18 of the war's most important battles, a section on tactics and weapons, and an introduction on events leading up to the war, its course, and the peace settlement."--Provided by publisher.

Volume 1: Australia to Italy -- Volume 2: Japan to the United States.