Wolfpacks return to the Atlantic

20th September 1943: A gap in Allied Intelligence leaves the convoys suddenly vulnerable to a new German weapon

Completed in 1919, USS McCook operated with the Atlantic Fleet until placed in reserve in 1922. Re-commissioned in December 1939, she again served with the Atlantic Fleet prior to being transferred to the RCN as HMCS St. Croix on September 24, 1940.

The growing effectiveness of the Allies in the battle against the U Boats had led to them being withdrawn…