John Keegan

Keegan spent his life studying war, but he never fought in one and described himself as more or less a pacifist. The British military historian, who died last week at age 78, chronicled the history of warfare from Alexander the Great to the U.S. invasion of Iraq.

Keegan is known for his readable and comprehensive books about warfare including "The Face of Battle," (1976) and "The History of Warfare" (1993) which were both best-sellers. Recently he was series consultant to "War and Civilization" an eight-part documentary series (on the TLC cable network) which covers the past 5,000 years of conflict, beginning with ancient Greece. The series is narrated by Walter Cronkite.

Military historian John Keegan. His new book, "The Second World War," recounts the strategies and battles of the war by looking at the three major theaters (the West, the East, and the Pacific) in both the early and late years of the war. Keegan, one of today's foremost military historians, is best known for analyzing the effects of war on the individual soldier. He taught for many years at the Royal Military Academy at Sandhurst in Britain, and is now the Defense Correspondent of The Daily Telegraph in London.