Preowned, hardback book with dust jacket and 492 pages in very good condition.
Written by Michael Gannon and published in 1998 by Harper Collins.
In May 1943 Allied sea and air forces won a dramatic and vital victory over the largest and most powerful force that ever went to sea, sinking forty one German U Boats, and by the end of that month the Germans were forced to withdraw from the traffic lanes of the North Atlantic. All the details of this story are here.