Following the cataclysmic losses suffered in World War I, air power theorists in Europe advocated for long-range bombers to overfly the trenches and strike deep into the enemy's heartland. The bombing of cities was seen as a means to collapse the enemy's will to resist and bring the war to a quick end. In the United States, airmen called for an independent air force, but with the nation's return to isolationism, there was little appetite for an...