The sole gun of this type was assigned to beta battery No.8 on the Eastern Front during 1915. In February 1915 the battery took part in the unsuccessful bombardment of the Russian Osowiec fortress in Northeast Poland. In June 1915 the battery then took part in the successful recapture of the former Austro-Hungarian fortress of Przemysl. In August 1915 the battery next took part in the successful siege of the Russian fortress at Kaunas in Lithuania. In October the battery then took part in the successful invasion of Serbia and bombarded strong points on the far side of the Danube. During 1916 the battery was moved to the Western Front and participated in the unsuccessful German bombardment of Verdun and during the Somme offensive. The battery served until the end of the war on the Western Front and its last action was during the unsuccessful German Michael Offensive in the Spring of 1918.