In World War I, the Foreign Legion fought in many critical battles on the Western Front, including Artois, Champagne, Somme, Aisne, and Verdun (in 1917), and also suffered heavy casualties during 1918. The Foreign Legion was also in the Dardanelles and Macedonian front, and was highly decorated for its efforts. Many young foreigners volunteered for the Foreign Legion when the war broke out in 1914. There were marked differences between the idealistic volunteers of 1914 and the hardened men of the old Legion, making assimilation difficult. Nevertheless, the old and the new men of the Foreign Legion fought and died in vicious battles on the Western front, including Belloy-en-Santerre during the Battle of the Somme, where the poet Alan Seeger, after being mortally wounded by machine-gun fire, cheered on the rest of his advancing battalion.