"With the Yanks in France in World War I, Americans learned the names - and nicknames - of Allied military leaders, along with their own. Here, somewhere in France, are four of the top men: Left to right, Gen. Joseph Joffre - Papa Joffre - idol of the French poilu; Gen. Ferdinand Foch, Allied commander-in-chief; unidentified officer (in back;) Field Marshal Sir Douglas Haig, the British Tommies' hero, and Gen. John J. - Black Jack - Pershing, commander of the AEF, the American Expeditionary Force."