H.M.S. Indefatigable, Britain's newest Aircraft Carrier, was first reported in action off Sumatra on January 24 and 29, 1945, when battleships and aircraft-carriers of the British East Indies Fleet totally destroyed the Palembang refineries, source of 75 per cent of Japanese aviation fuel. The force was commanded by Rear-Admiral Sir Philip Vian, K.C.B., D.S.O., in the battleship King George V. An improved type of the Illustrious class, the Indefatigable was built at John Brown's Clydebank. With a length of over 800 feet, she is believed to carry at least 100 aircraft, besides about 2,000 officers and men. Her defensive armament is said to include sixteen 4.5-in. dual-purpose guns. Our first quadruple-screw carrier, 30,000 tons, her speed is computed at 32 knots. See also facing page. Photo, British Offical.