On October 23, 1941, U.S. Navy destroyer USS Reuben James left Newfoundland to escort a convoy bound for Britain. Two days later, the German U-boat U-552 left the French port of St. Nazaire to prowl the North Atlantic on its sixth patrol.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.