The Battle of the Somme, fought in the summer and autumn of 1916, was one of the largest battles of the First World War. With more than one million casualties, it was also one of the bloodiest battles in human history. The Allied forces attempted to break through the German lines along a 25-mile (40 km) front north and south of the River Somme in northern France. One purpose of the battle was to draw German forces away from the Battle of Verdun; however, by its end the losses on the Somme had exceeded those at Verdun.