Although a major re-armament of the navy (Plan Z) was planned, and initially begun, the start of the war in 1939 meant that the vast amounts of material required for the project were diverted to other areas. The sheer disparity in size when compared to the other European powers navies prompted German naval commander in chief Grand Admiral Erich Raeder to write of his own navy once the war began "The surface forces can do no more than show that they know how to die gallantly." A number of captured ships from occupied countries were added to the German fleet as the war progressed.[22] Though six major units of the Kriegsmarine were sunk during the war (both Bismarck-class battleships and both Scharnhorst-class battleships, as well as two heavy cruisers), there were still many ships afloat (including four heavy cruisers and four light cruisers) as late as March 1945.