The career of the French general Maxime Weygand offers a fascinating glimpse into the perils and politics of military leadership and loyalty in the interwar years and after France's defeat in 1940. Of obscure birth, Weygand had an outstanding career during WWI as chief of staff for Marshal Foch and served France after the war in Poland and Syria before returning home. Alarmed by Nazi Germany's rearmament, Weygand locked horns with a political leadership...