Merry Christmas and a Happy New Year to all !
This exhaustive 2 volume set is the compilation of "Die Duetsche Kriegsmarine 1939-1945" , written by W. Lohmann & H.H. Hilderbrand and published in 1956. Each volume is about 2" thick (900-1000 pages), and covers every aspect of the German Navy during the war, including; Submarines, Coastal Artillery, Flak, Auxillery Cruisers, etc,