Gen. Stanley McChrystal is a hero—a selfless, fearless and inspiring soldier. He is also something of a military genius. In Iraq, as commander of the Joint Special Operations Command from 2003-2008, he created an extraordinary military operation.

His command center—a vast open hall resembling the floor of a trading exchange—put long-haired civilian geeks next to wiry commandos, and together they uncovered, analyzed, pooled and acted on information that enabled soldiers to launch successful operations...