Battle of the Java Sea
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.
Japan demanded the delivery of raw materials, most importantly OIL from Sumatra. The Dutch administration complied; yet in March 1942 the Japanese invaded, occupying most of the archipelago (southern New Guinea escaped Japanese occupation). The Dutch residents, in total 170,000, were INTERNED, a Japanese military administration established; the Japanese partitioned the archipelago in three zones, Sumatra, the Central and the Eastern Islands; many Indonesians found employment in the new administration. Dutch was replaced, as language of administration, education and jurisdiction, by Bahasa Indonesia and Japanese.