“On this day in history” German submarines at sea during the Battle of the Atlantic

German submarines at sea “on this day in history” 9 June during the Battle of the Atlantic.

1940 19
1941 32
1942 70
1943 85
1944 97
1945 2

A German U-Boat commander tracking a British merchant ship through his periscope during an attack on a convoy, 10-20 June 1942 (IWM HU 40239).