Werner Hartmann

Werner Hartmann (11 December 1902 – 26 April 1963) was a German U-boat commander in World War II. He was credited with sinking 26 ships, amounting to over sunk. He was a recipient of the Knight's Cross of the Iron Cross with Oak Leaves of Nazi Germany. Provided by Wikipedia

1
by Fuchs-Hartmann, Werner
Published 1934
Vieweg+Teubner Verlag

3
by Hartmann, Werner, Näf, Michael, Reichert, Raimond
Published 2006
Springer Berlin Heidelberg