The U-Boat campaign off the United States' coast is pretty well known. Complacency on the American side, and daring on the German side. Combining in a perfect storm that saw many, many losses in the early days after the United States joined the war. That said, not all those losses were American. Some U-Boats were lost too, including one particularly noteworthy one. U-166. A submarine sunk close off the Gulf Coast. This sinking became something of a controversy, in how the captain responsible was treated by the Navy. But the boat, herself, is interesting all her own. After all, this...