Germany
Battle Ship

Service history: At the start of World War I, Helgoland was assigned to the I Battle Squadron. Under the command of Captain von Kameke, Helgoland fought at the Battle of Jutland, alongside her sisterships. During the battle, Helgoland fired 63 twelve inch rounds, while sustaining only one 15 inch hit.
After the end of World War I, all four Helgoland class battleships were surrendered as prizes of war to the Allies, with Helgoland going to the United Kingdom. She was scrapped at Morecambe in 1921.

Service history: Nassau and her sisterships all took part in the Battle of Jutland on 31 May–1 June 1916, as part of the I Battle Squadron. Nassau fired 106 main battery shells, and was hit twice by 4 inch shells. During the battle, Nassau collided with HMS Spitfire. Nassau suffered a total of 11 killed and 16 injured during the battle.
Following the end of World War I, the ships were surrendered to the victorious powers as war booty. SMS Nassau was surrendered in April 1920 to Japan. With no use for the ship, Japan sold her to a British wrecking firm which then scrapped her in Dordrecht (Netherlands).

Service history: After commissioning Hannover was initially attached to the 2nd Battle Squadron of the German High Seas Fleet on 13 February 1908, until transferring to the First Battle Squadron in September of that year. She remained with the 1st Battle Squadron until 1911, when she was transferred back to the 2nd Squadron, of which she became the flagship in 1912.

World War I: As part of the High Seas Fleet's 2nd Battle Squadron under Rear-Admiral Mauve, and despite being outdated by the time, Hannover and her sisters took part in the Battle of Jutland on 31 May 1916. During the battle she fired a total of eight 28-cm and 22 17-cm shells, and remained undamaged. Pommern was sunk. After Jutland she was sent to Kiel on 4 November 1916 for repairs and refits, and she was used as a target ship in the Baltic Sea. In March 1917 some of her guns were removed, and the Hannover was relegated to guard duty and coastal defence for the remainder of the First World War.

Postwar service: After World War I, under the terms of the Treaty of Versailles Germany was allowed to keep her obsolescent warships, and this included the Hannover; owing to budgetary constraints she was decommissioned on 17 December 1918. Modernized in Wilhelmshaven in 1920 and 1921, she was again commissioned as the flagship of German naval forces in the Baltic in June 1921.
She continued in sevice with the German Weimar Navy until final decommissioning on 25 September 1931, when she was stricken from the active rolls. From 1931 to 1935 Hannover served in the Reichsmarine as a test ship for ground mine damage evaluation. She was then held in reserve for conversion into a remote-controlled target ship for aircraft, but this was never carried out.

She was scrapped in Bremerhaven from 1944 to 1946.

Service History: Began service during World War I as a coastal defence ship alongside her sisterships in the IV Battle Squadron. On 26 August 1914, Elsass attempted to aid the grounded cruiser Magdeburg. In July 1916, she was removed from front-line service to be used as training ship until the end of the war.She served in the Reichsmarine from 1924 to 1930. She was was withdrawn from service on 25 February 1930 and struck from the Navy list on 31 March 1931. She was used as a hulk in Wilhelmshaven until she was scrapped in 1936.