Moslty merchant ship, supply line disrupment.
they were used to kill
The submarines attacked Pearl Harbor
It sank up to 2,779 ships in world war 2
The Germans then threatened to use only Uboats for war and blew up a few ships.
The French used the franc during World War II.
Dynamite was used in World War 1, but stopped using it during World War 2
If there were U-boats in the Black Sea they could have traveled throug the Mediterranean Sea, the Aegean Sea, the Sea of Marmara, the Hellespont, and the Bosphorus into the Black Sea.
Much of the East coast was blacked out as Nazi Uboats were sinking shipping all the way from NY to FL. They also did some shelling with their small deck guns.
because of the alliances the US had made previous to the start of the war along with the threat of the German Uboats attacking US civilians and property.
The words tummy and belly were used during the world war 2 era.
Dynamite was used in World War 1, but stopped using it during World War 2
They were mostly used for the transportation of Jews to and from concentration camps during the Holocaust, which was during World War 2.
During World War 2, it is reported that over 2,000 variants of Japanese Submarines were used during World War 2. Out of this, it is estimated that 10,000s were likely to be used during WW2.