They fought a war against civilian merchant ships (Guerre de Course).
U-boats=Submarines
'U-boats' was the name given to German submarines in both the first and second world war.
The Germans manufactured the u-boats.
Germany
Germans
They had over 1,000 U-Boats They had over 1,000 U-Boats
U-boats
really big
U-boats
no they destroyed them
Sinking merchant ships.
They are actually called 'u-boats', and they were employed by the german military.