Unlike land and maritime military warfare, which has evolved over thousands of years, the history of war in the air is as short as it has been spectacular: only 100 years have passed since the first flight in a powered aircraft. Despite its brief history, however, military air power is not an insignificant part of the modern military machine: on the contrary, it has played a strikingly prominent role in recent conflicts and humanitarian relief operations, and is likely to take the leading position in many future ones. In the decades since World War II the skies, and increasingly space, have...

Red states versus blue states. Metro versus retro. North or South, East or West. Pundits, politicians, and social scientists love to carve out categories in an attempt to make sense of political and social divisions that run through the American landscape. As the home of nearly 300 million people spread over approximately 3.7 million square miles of earth, the United States poses a monumental challenge to all who try to grapple with its rich and immensely complex physical and social geography. Acclaimed British historian Jeremy Black tackles this challenge through a literal and metaphorical...