On the day Rome fell, that great American Army numbered eight million soldiers, a fivefold increase since Pearl Harbor. It included twelve hundred generals and nearly 500,000 lieutenants. Half the Army had yet to deploy overseas, but the U.S. military already had demonstrated that it could wage global war in several far-flung theaters simultaneously, a notion that had “seemed outlandish in 1942,” as the historian Eric Larrabee later wrote.