U-boat

Prominent among those struggles was the battle of the Atlantic, waged against the U-boat menace.

I suspect that the production stopped short of plagiarism, but it probably sailed very close to the U-boat.

He died in 1941, just 35, after a German U-Boat torpedoed the ship on which he was sailing as a BBC correspondent to Cairo.

If he spotted a U-boat, not only would he call for backup, he wanted to attack the sub himself.

This was the policy adopted by the Allies of not giving out the news that any U-boat was captured or otherwise accounted for.

There has naturally been a great deal of ink spilled during the War on the subject of the U-boat.

A hit on a big ship, once the destroyer screen has been avoided, is comparatively easy; a hit on a U-boat is mighty difficult.

In certain cases the U-boat captains exceeded their instructions and acted yet more illegally.

The patrol vessels could not be blamed, but the U-boat Service would have had a good grievance for the rest of the war.