Dive into the world of World War 2 Submarines. One of the greatest fears in life that many people share is that of drowning. Others fear being encased in small cramped spaces with no way out. Those that operate submarines face both. These unique machines are a fairly new machine in the combat at sea in the year 1939. These sailors risked it all for their respective countries to be the silent killers from beneath the waves.These are the stories of these young men & women who's stories were untold. These untold tales were mostly sunk to the bottom of the ocean, but those who survived live to tell their side of the story.Learn about the origin of the submarine. Where were they created to begin with? You may be surprised to find out about some of the earliest prototypes and how the concept got started. What country began to use them early on and how was the success?