As author Alex Swanston explains in his introduction, "World War II was a truly global conflict, involving almost all nations in the struggle to stop the spread of totalitarianism. This meant that battles were fought in all climates and on all sorts of terrain. . . . Technology had also progressed, meaning that war could be fought under the surface of the sea or in the air 40,000 feet above. This unique scenario involving all aspects of the military...