raidriar889 t1_iwhwpco wrote
Reply to comment by Jaggedmallard26 in TIL that the civilian sailors of the U.S. Merchant Marine had a higher casualty rate during World War II than any branch of the armed forces. by p38-lightning
Another overlooked measure that significantly reduced the threat of U-boats was improvements to radar that allowed ships to detect the conning towers of submarines from beyond the horizon and even their periscopes.
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