Known as the Silent Service, the men of the United States Submarine Force were the unsung heroes of the US Navy. In World War Two, Submarine Force alone was responsible for sinking over fifty percent of Japanese Shipping - but the success came at a high price - one in five submarines did not survive the war. Here USS Wahoo, arguably the most famous US Submarine of the war, is seen surveying a kill during her fifth war patrol in 1943. USS Wahoo (SS-238) would also fall victim, sunk by Japanese aircraft and Japanese submarine chasers 15 and 43 in Soya Strait, Japan on the 11th of October 1943.