Many credit the miscalculation of entry into Russia during the winter, along with the waging of war on two fronts, as the downfall of Nazi Germany’s efforts in the second world war. Although Adolf Hitler may have made another, less obvious fault. And that was to so intensely centralize his control over war operations. In The Mask Of Command, John Keegan touches on the histories, successes and failures of several of history’s prominent generals. A passing remark is left that those who seek...