http://www.hmshood.com/history/timeline4.htm
12 May: Vice Admiral Lancelot E. Holland, new commander of the Battle Cruiser Squadron and Second in Command of the Home Fleet, set up command in Hood.
http://en.wikipedia.org/wiki/Lancelot_Holland
http://www.kbismarck.com/histoperi.html
12 May 1941: Admiral Lütjens and the Fleet Staff embark in the Bismarck.
http://en.wikipedia.org/wiki/G%C3%BCnther_L%C3%BCtjens