3 relations: List of German Type II submarines, List of U-boats of Germany, Operationsbefehl Hartmut.
List of German Type II submarines
The list of German Type II submarines includes all Type II submarines (Unterseeboot or U-boat) built by Germany.
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List of U-boats of Germany
Germany has commissioned over 1,500 U-boats (Unterseeboot) into its various navies from 1906 to the present day.
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Operationsbefehl Hartmut
Operationsbefehl Hartmut (literally "Operation Order Hartmut") was the code word to begin German submarine operations during Operation Weserübung - Nazi Germany's invasion of Denmark and Norway.
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Redirects here:
German submarine U 57 (1938), German submarine U57 (1938), U 57 (1938), U-57 (1938), U57 (1938), Unterseeboot 57 (1938).
References
[1] https://en.wikipedia.org/wiki/German_submarine_U-57_(1938)