Advanced Tactical Submarine

The Advanced Tactical Submarine was a powerful submarine armed with nuclear torpedoes used by the Soviet Union during the Second World War.

Background
The Advanced Tactical Submarine was developed by the Soviets as a more powerful variant of the standard submarine. However, information of its development was somehow leaked to the Allies, who deployed forces to destroy the Soviet base where it was developed. The attack was thwarted by Field Commander S7, however.

During the battle, the ATS managed to sank an Allied Cruiser detachment sent to destroy the base.