With the commissioning of the Deutschland class, the fleet had enough battleships to form two full battle squadrons; the fleet was then reorganized into the High Seas Fleet, which saw combat during World War I. Despite their obsolescence, all five of these ships were present at the Battle of Jutland on 31 May – 1 June 1916. In the confused night actions, Pommern was torpedoed and sunk. After the battle, the four surviving ships were removed from the front-line fleet and employed in secondary tasks.