A missing submarine in Spanish Civil War leads to the first German Navy operation before WW2. Republican submarine C-3 was the victim of international secrecy and intrigues, after a torpedo from U-34 sunk it on December 12th 1936.
1937
2022
2007
2000
2013
1976
2018
2019
2011
2021
1963
2009
2002
2020
2023
1939
1984