As an ingenious new method of sinking warships.
Yes, submarines were used by the Confederate Navy in the US Civil War.
No, not really, submarines were first used successfully in the Civil War.
4
Both the Union and the Confederate had submarines, but the Confederate used them more often.
One primitive submarine was used in the Civil War. It destroyed a Union ship but the sub also sank after its only attack.
Yes, they had crews.
the battle of butthed island
World War I submarines were primarily used to locate and attack surface cargo and warships.
submarines
They were used by submarines to navigate when not in open waters, They were also used by submarines and anti-submarine ships to locate enemy submarines.
submarines were used in WW1 and the weapons used were torpedos and a deck gun.
Revolutionary War 1776.