During World War II, German U-boats almost succeeded in bringing Britain to its knees. US Navy submarines saw their greatest success against Japan with the sinking of more than 500 vessels in the Taiwan Strait. The complete blockade of Japan with US submarines, US Navy aircraft and an aerial mining program destabilized Japan’s economy and created severe shortages of food, materials for weapons production and fuel.
On April 2, 1982, Argentine forces used submarines to invade the Falkland Islands, a British territory, sparking one of the largest conflicts since World War II. In response to Argentine aggression, the British government quickly assembled a task force to engage the Argentine Navy.