General John J. Pershing operated on which main theatre of war during the First World War?
United States campaigns in World War I: This article is about the United States campaigns in World War I. American entry into World War I in early April 1917 resulted in the American Expeditionary Force (AEF) on the Western Front, under General John J. Pershing, being engaged in 13 campaigns, during the period 1917–18, for which campaign streamers were designated. Western Front (World War I): The Western Front was the main theatre of war during the First World War.
The Western Front