German U-boats sank the battleship Barham in the east and the carrier Ark Royal, which had helped keep Malta supplied with aircraft, in the west. |
Six months after Pearl Harbor, U-boats landed eight German marines on American shores for sabotage missions. |
This approach would be similar to that adopted to fight German U-boats in the Second World War. |
They recovered code-books and minefield plans from sunken German U-boats in World War One. |
During WWII, German U-boats sank more than 5000 merchant vessels and many Allied warships. |
As part of the surrender terms, the Royal Navy received 176 U-boats as spoils of war. |