In April 1941, Raeder planned to follow up the success of Operation Berlin with an even larger mission involving a battleship, two battlecruisers and a heavy cruiser under the command of Lütjens, codenamed Operation Rheinübung. The original plan was to have the battlecruisers "Gneisenau" and "Scharnhorst" involved in the operation, but "Scharnhorst" was undergoing heavy repairs to her engines, and "Gneisenau" had just suffered a damaging torpedo hit days before which put her out of action for six months. In the end only the "Bismarck" and "Prinz Eugen" were sent out on the mission, which ended with "Bismarck"'s sinking. The debacle almost saw the end of using capital ships against merchant shipping. Hitler was not pleased and saw the Bismarck as a poor investment.