Tirpitz in Norway: X-craft midget submarines raid the fjords, Operation Source 1943

In September 1943, under the cover of darkness, six British 'midget' submarines crept into the heart of enemy territory, penetrating a heavily guarded Norwegian fjord in an attempt to eliminate the threat of the powerful German battleship, the Tirpitz.

Numerous previous attempts to attack the ship from both air and sea had failed, and this mission was carefully strategized, and undertaken by skilled operatives who had undergone extensive training in an isolated sea loch. Though five of the s...