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. The streamer uses the colors of the World War I Victory Medal ribbon which had a red center with a rainbow on each side of the center stripe and a purple edge. The double rainbow symbolizes the dawn of a new era and the calm which follows the storm.
Battle of Krivolak The Battle of Krivolak [in Bulgarian: Криволашко сражение (1915)] was a World War I battle, fought between 21 October and 22 November 1915. The battle was fought in the initial stage of the Macedonian campaign, in the Balkans Theatre. On October 21, Bulgarian troops attacked the French-held positions near the Strumica rail station, at the time part of the Kingdom of Serbia (present day Republic of Macedonia), starting the battle. Fighting continued until November 22, when two Serbian divisions failed to capture Skopje, thus rendering the continuation of offensive Entente operations dangerous and enabling the French to evacuate their forces from the region.