The U-boats, it seemed, had developed an effective tactic that had, to date, evaded the Allied navy, tasked with repelling their attacks. Roberts and the Wrens planned to use wargames to identify ...

So instead he called on a group of Wrens to wargame the tactics that would outmanoeuvre the U-boats. He handpicked a team comprising 66 outstandingly intelligent women mathematicians ...

The U.S. Navy turned the tide on U-boats by creating a special task group that's mission was to hunt down German U-boats. Carter was part of Task Group 223, which captured the U-505 off the coast ...

But the U-boat was also sunk within minutes by a U.S. Navy Kingfisher and another freighter. Bluefields did not suffer any casualties but all 45 people aboard U-576 were killed.