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 ) .
In World War I , the Foreign Legion also suffered heavy casualties during 1918 .
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 .