There was more to WWII science than the atomic bomb, demonstrates Shachtman (Absolute Zero and the Conquest of Cold) in his fascinating history of the use of intelligent machines in the conflict. He traces the development of scientifically engineered weapons such as poison gases, encoding devices (like ENIGMA), rockets, radar and early heat-seeking defenses, showing how both sides relied to an unprecedented extent on the work of scientists. Germany's defeat on the scientific front, Shachtman argues, was due largely to Hitler's sluggishness in making full use of his researchers and to the Third Reich's predilection for flashy, impractical weapons over the more mundane, efficient ones that could counter Allied bombs. Moving back and forth between Allied and Axis advances, Shachtman dramatically captures the breakneck pace of research and the charged atmosphere of the WWII lab. He examines the effects of scientific developments on pivotal battles, and he also profiles individual engineers, chemists, physicists and biologists in Europe and Japan. In addition, Shachtman shows how developments during the period would later improve the lot of postwar consumers. The impeccably researched, taut volume maintains its focus on the role of science without drowning in voluminous WWII historical material. This effortlessly readable text will be of interest to fans of history and science, and to the casual reader as well. Photos not seen by PW. (June)