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
Kaiser Friedrich III-class battleship Karl der Grosse" and "Kaiser Wilhelm II" were equipped with two of the 3-bladed screws on the outer shafts and a four-bladed screw that was in diameter on the center shaft. "Kaiser Friedrich III" had four Thornycroft and eight cylindrical boilers; "Kaiser Wilhelm II" had a similar arrangement, except the Thornycroft boilers were replaced by Marine-type boilers. "Kaiser Wilhelm der Grosse" was equipped with four Marine and six cylindrical boilers, while "Kaiser Barbarossa" had four Thornycroft and six cylindrical boilers. "Kaiser Karl der Grosse" had two Marine boilers, two Marine double boilers, and six cylindrical boilers. The powerplants were rated