Not sure what you want to know. The first working submarine was in the Civil War.
Yes. Actually, the first submarines were used a number of years before 1912.
David Bushnell invented the first war submarine
The first submersible of whose construction there exists reliable information was built in 1620
First Things was created in 1990.
First Things First - album - was created in 1979.
There are several things that were first used in WW1 like submarines, machine guns and fighter planess. The first sub-machine gun was developed during WW1 but the war ended before in came in to service.
No, not really, submarines were first used successfully in the Civil War.
Diesel engines were first used in submarines and ships since before they were used in cars. According to "Diesel engine history", a Russian oil company named Branobel designed the first diesel engine for use on a ship, the first of which were launched in 1903.
Both sides, the Allies and the Axis, had submarines when WW2 started.
Atlantic Ocean.
The Germans were the first to use Submarines in World War 1. Now i believe that the marines now do at times.
Regulus The First Nuclear Missile Submarines - 2002 was released on: USA: 21 April 2002