The Battle Hostile_encounter of Saint-Mihiel was a major World War I battle Hostile_encounter fought Hostile_encounter from 12–15 September 1918 , involving Cause_to_be_included the American Expeditionary Forces ( AEF ) and 110,000 French troops under the command Control of General John J. Pershing of the United States against German positions .

The Battle Hostile_encounter of Château-Thierry was fought Hostile_encounter on May 31 , 1918 and was one of the first actions of the American Expeditionary Forces ( AEF ) under General John J .

German and local actions at Château-Thierry recommenced Process_start on 31 May to 22 July 1918 , against the AEF , an American Expeditionary Force , consisting Cause_to_be_included of troops from both the United States Army and Marine Corps units .

The AEF counter-offensive combat action at Château-Thierry was relatively brief starting Process_start on July 18 , 1918 and lasting Being_in_operation for less than a week and was part of the allied effort to push back the recent German advance .

Hamel was the first time during World War Hostile_encounter I that elements of the AEF were commanded Control operationally by non-American officers .