. . "arrival of sufficient US troops on the Western Front" . . . "AEF" . . "Europe" . . "American Expeditionary Forces" . . . "4,000,000" . . "American Expeditionary troops" . "deployment" . "US troops" . . "Americans" . . . "158th Field Artillery Brigade" . . "AEF headquarters" . . . "American Expeditionary Forces University" . "American Expeditionary Forces on the Western Front in World War I" . . "American Expeditionary Forces" . . . . . "US Army" . . . . . . . . . "one army" . . . "A. E. F." . . . . . . . "1920-08-31" . "World War I" . . "United States" . . . . "U.S. armies" . . . . . . . "American Army" . . . . . . "American troops" . . . "American Expeditionary Force (AEF)" . . . . . . . "United States' 20-month experience" . . . "World War I troops" . . "American Expedition Force" . . . . "American forces" . . . . . . . . . "A.E.F" . . . . "army" . . . . . . . . . "expeditionary forces" . "A.E.F." . . "American reinforcement" . . . . . . . "American Expeditionary Forces (AEF)" . "France" . . "United States Army" . . . . "American Expeditionary Force" . . . . . "American Expeditionary Force University" . . "American" . . . . . . . . . . . . . . . "the arriving American army" . . "1920" . "1917" . .