This is a riveting and disturbing account of the medical atrocities performed in and around Japan during WWII. Some of the cruelest deeds of Japan's war in Asia did not occur on the battlefield, but in quiet, antiseptic medical wards in obscure parts of the continent. Far from front lines and prying eyes, Japanese doctors and their assistants subjected human guinea pigs to gruesome medical experiments. In the first part of Unit 731: Testimony author Hal Gold draws upon a painstakingly accumulated reservoir of sources to construct a portrait of the Imperial Japanese Army's most notorious medical unit, giving an overview of its history and detailing its most shocking activities. The second half of the book consists almost entirely of the worlds of former unit members themselves, taken from remarks they made at a traveling Unit 731 exhibition held around Japan in 1994-95.