It is World War II and the age of the dreadnoughts has passed and naval warfare is being dominated by aircraft carriers. Submarines hunt convoys like wolves and the numerous and nimble destroyers rule the oceans. Destroy enemy battleships, torpedo enemy convoys and hunt the enemy wherever you may find them.Advance through the naval ranks from the Captain of a destroyer to an Admiral of a vast fleet. Win medals for your exploits and help your chosen nation achieve victory in each campaign.