On numerous occasions when German U-Boats were shadowing an Allied convoy and broadcasting the convoy’s position to U-Bootwaffe, Allied escorts ships would appear out of nowhere and sink the U-Boat. This ability was the result of Allied HF/DF.
Charles McCain is a Washington DC based freelance journalist and novelist. He is the author of "An Honorable German," a World War Two naval epic. You can read more of his work on his website: http://charlesmccain.com/ View all posts by Charles McCain