The U.S. military is obligated by law, and by every tradition of American decency, to refuse to follow illegal orders. But what about orders that may not be illegal but are clearly immoral and illogical? The president, for example, can order the Pentagon to plan for an invasion of Greenland; such an order would be little more than a direction to organize one more war game. (The military, as it sometimes does during war games, might not even use real place names, but rather use maps that look a lot like the North Atlantic as it organizes an invasion of “Verdegrun” or something.)