"Kaplan became one of the principal intellectual boosters for US power in the world through the tried-and-true "American way of war." This is the way of war dating to the British-colonial period that military historian John Grenier called a combination of "unlimited war and irregular war," a military tradition "that accepted, legitimized, and encouraged attacks upon and the destruction of noncombatants, villages and agricultural resources . . . in shockingly violent campaigns to achieve their goals of conquest." Kaplan sums up his thesis in the prologue to Imperial Grunts, which he subtitles "Injun Country": "By the turn of the twenty-first century the United States military had already appropriated the entire earth, and was ready to flood the most obscure areas of it with troops at a moment's notice. The Pentagon divided the planet into five area commands-similar to the way that the Indian Country of the American West had been divided in the mid-nineteenth century by the U.S. Army.... [A]ccording to the soldiers and marines I met on the ground in far-flung corners of the earth, the comparison with the nineteenth century was apt. "Welcome to Injun Country" was the refrain I heard from troops from Colombia to the Philippines, including Afghanistan and Iraq. To be sure, the problem for the American military was less [Islamic] fundamentalism than anarchy. The War on Terrorism was really about taming the frontier.” Kaplan goes on to ridicule "elites in New York and Washington" who debate imperialism in "grand, historical terms," while individuals from all the armed services interpret policy according to the particular circumstances they face and are indifferent to or unaware of the fact that they are part of an imperialist project. This book shows how colonialism and imperialism work."