Prince Louis of Battenberg, First Sea Lord of the Admiralty, c1914. Louis Alexander Mountbatten, 1st Marquess of Milford Haven (1854-1921), formerly Prince Louis Alexander of Battenberg, was a British naval officer and German prince. Prince Philip, Duke of Edinburgh, consort of Queen Elizabeth II, is his grandson. From 'The Manchester Guardian: History of the War', Vol. I.-1914-15., 1915. (Photo by Print Collector/Getty Images)
