World War II: In the action of 14 February 1944, a Royal Navy submarine sinks a German-controlled Italian Regia Marina submarine in the Strait of Malacca.

The action of 14 February 1944 refers to the sinking of a German U-boat off the Strait of Malacca during World War II by a British submarine. It was one of the few naval engagements of the Asian and Pacific theater involving German and Italian forces.

The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the English Navy of the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service.

The Regia Marina (RM) or Royal Italian Navy was the navy of the Kingdom of Italy from 1861 to 1946. In 1946, with the birth of the Italian Republic, the Regia Marina changed its name to Marina Militare.

The Strait of Malacca is a narrow stretch of water, 900 kilometres (560 mi) long and from 65 to 250 km wide, between the Malay Peninsula to the northeast and the Indonesian island of Sumatra to the southwest, connecting the Andaman Sea and the South China Sea. As the main shipping channel between the Indian and Pacific oceans, it is one of the most important shipping lanes in the world.