Mission Tactics: Knowing When Not to Obey Orders
Nothing epitomized the outlook and performance of the [nineteenth-century C.E.] German General Staff, and of the German Army which it coordinated, more than this concept of mission tactics: the responsibility of each German officer and noncommissioned officer—and even Moltke‘s ‘youngest soldier’—to do without question or doubt whatever the situation required, as he saw it. This meant that he should act without awaiting orders, if action seemed necessary. It also meant that he should act contrary to orders, if these did not seem to be consistent with the situation.
To make perfectly clear that action contrary to orders was not considered either as disobedience or lack of discipline, German commanders began to repeat one of Moltke’s favorite stories, of an incident observed while visiting the headquarters of Prince Frederick Charles. A major, receiving a tongue-lashing from the Prince for a tactical blunder, offered the excuse that he had been obeying orders, and reminded the Prince that a Prussian officer was taught that an order from a superior was tantamount to an order from the King. Frederick Charles promptly responded: “His Majesty made you a major because he believed you would know when not to obey his orders.” This simple story became guidance for all following generations of German officers.
— Trevor N. Dupuy, A Genius For War, p. 116
Emphasis mine.