D. M. Giangreco
Jan 16, 2010 — The atom bombs dropped on Japan in 1945 killed — by some estimates — more than 200,000 people. In Hell To Pay, military historian D.M. Giangreco argues that the alternative, a land invasion of Japan, would have been many times more deadly. Japanese estimates, Giangreco says, set the figure at 20 million.