HELL BELOW

An in-depth look at the remarkable history of USS Silversides and its key role in the Guadalcanal Campaign.

See how the bold USS Barb commander Eugene Fluckey envisioned, then demonstrated, new ways to fight from a submarine.

Witness the legendary U-515 as it faces an enemy unlike anything seen in the war before.

Follow HMS Upholder as it battles through rough seas and broken equipment to keep Rommel's forces from capturing Egypt.

Two submerged subs battle blind in a rare World War II attack that changed subsea warfare forever.

Revisit the Cuban Missile Crisis and see the nuclear battle brewing under the sea's surface.