SMS Gneisenau
SMS "Gneisenau" was an armored cruiser of the German navy, part of the two-ship . She was named after August von Gneisenau, a Prussian general of the Napoleonic Wars. The ship was laid down in 1904 at the AG Weser dockyard in Bremen, launched in June 1906, and completed in March 1908, at a cost of over 19 million goldmarks. She was armed with a main battery of eight guns, had a top speed of , and displaced at full combat load.
SMS Adler
SMS "Adler" was a gunboat of the Imperial German Navy. She was launched 3 November 1883 in the Imperial shipyard in Kiel. On 5 September 1888, she shelled Manono Island and Apolima, Samoa, which were strongholds of Malietoa’s forces. She was wrecked together with the German gunboat , the German corvette , the United States Navy gunboat , the U.S. Navy screw steamer , and the U.S. Navy sloop-of-war on 16 March 1889 in a hurricane at Apia, Samoa, during the Samoan crisis. Twenty crew members lost their lives.