Tags: Weapon.
The Krupp 13.5 cm (5.31 in) FK 1909 was introduced into German service in 1909 however by 1914 only 16 had been built. Production was accelerated when war began but in 1915 it was withdrawn from service and replaced with guns capable of higher angles of elevation and longer range. Later in the war the FK 1909 was brought back into service due to attrition and shortages.