The US helped France in world war 1 with submarines in the Atlantic.
52 US submarines were lost in WW2. This was about 1 in every 5 submarines that the US had in WW2
326
52
eighty five
Only one US submarine sank in World War One.
The early SS and the newer GATO Class diesel submarines.
There are different answers to that but the most common one is that the USN had 288 submarines in WW2
The U.S. had 111 submarines in commission at the start of World War II and commissioned 203 more before the war ended.
52 subs were sunk (lost).
Yes, submarines were used by the Confederate Navy in the US Civil War.
Because the Germans started sinking or cargo ships with their submarines.