Royal descendants of Queen Victoria and King Christian IX were closely related due to their mutual descent from either Queen Victoria, King Christian IX or both. The most commonly cited example is the fact that Nicholas, his wife, Alexandra, and Kaiser Wilhelm II of Germany were all first cousins of King George V of the United Kingdom. Other countries who fought against Germany in addition to Russia and the United Kingdom were Romania, whose queen-consort, Marie, wife of King Ferdinand I, was a cousin of the Kaiser, and Greece, whose queen-consort, Sophia, wife of King Constantine I, was the Kaiser's own sister. Additionally, King George V was a first
SMS Kaiser Wilhelm der Grosse 19 February 1901, followed by acceptance trials that started on 18 March. These were completed by May, and she was formally commissioned on 5 May. That year, Erich Raeder—who went on to command the "Kriegsmarine" in World War II—was promoted to serve as a watch officer aboard her. After commissioning in 1901, "Kaiser Wilhelm der Grosse" joined her sister ships in the I Squadron of the "Heimatflotte" (Home Fleet). After her sister ran aground and had to be docked for repairs, "Kaiser Wilhelm der Grosse" replaced her as the I Squadron flagship, which was commanded by Prince Heinrich, the brother