The Battle of the Java Sea was a major naval battle of the Pacific campaign of World War II. Allied navies suffered a disastrous defeat at the hand of the Imperial Japanese Navy, on February 27, 1942, and in secondary actions over successive days. The American-British-Dutch-Australian Command (ABDA) commander, Admiral Karel Doorman was killed. The aftermath of the battle included several smaller actions around Java, including the smaller but also significant Battle of Sunda Strait. It was the largest surface engagement since the Battle of Jutland in World War I.