forces was the guerilla campaign in Timor, waged by Australian and Dutch infantry for almost 12 months after Japanese landings there on February 19. Official command structure General Sir Archibald Wavell, British Army (BA) – Supreme Commander Lieutenant General George H. Brett, U.S. Army Air Forces (USAAF) – Deputy Commander Lt Gen. Henry Pownall (BA) – Chief of Staff Land forces (ABDARM) Lt Gen. Hein ter Poorten, Royal Netherlands East Indies Army (KNIL) – commander of land forces (ABDA Land); also in direct command of Dutch East Indies land forces Major General Ian Playfair (BA) – deputy land commander in chief of staff, land forces Maj. Gen. T. J. Hutton (BA) – British forces in Burma Maj. Gen. David Blake, Australian Army, Australian 7th Military District (Northern Australia) Lt Gen. Arthur Percival (BA) – Malaya Command Gen. Douglas MacArthur, United States Army – Allied forces in the Philippines (MacArthur was technically subordinate to Wavell, but in reality many of the chains of command shown here operated independently of ABDACOM and/or existed only on paper.) Air forces (ABDAIR) Air Marshal Sir Richard Peirse, Royal Air Force (RAF), commander of air forces (ABDA Air) Maj. Gen. Lewis H. Brereton (USAAF), deputy commander air forces Air Vice-Marshal Sir Paul Copeland Maltby RAF, Air Officer Commanding RAF in Java Air Vice-Marshal D. F. Stevenson RAF, NORGROUP (RAF: Burma) Air V. Marshal C. W. Pulford RAF, WESGROUP (RAF: Malaya and North Sumatra) ? CENGROUP (KNIL: South Sumatra and West Java; merged with EASGROUP on 22 February 1942) ? EASGROUP (USAAF: East Java; merged with CENGROUP on 22 February 1942) Maj. Gen. Ludolph van Oyen (sometimes van Oijen) Royal Netherlands East Indies Army Air Force (KNIL), Allied Air Forces Java after February 22. RECGROUP (air reconnaissance group) Kapitein ter Zee G. G. Bozuwa Royal Netherlands Navy (deputy) Captain Frank D. Wagner, USN (flying boat reconnaissance units: Marineluchtvaartdienst (MLD); Patrol Wing 10, US Navy; No. 205 Squadron RAF) Air Commodore D. E. L. Wilson, Royal Australian Air Force, AUSGROUP (RAAF: North-Western Australia, Molucca Sea & Dutch New Guinea) Naval forces (ABDAFLOAT) Admiral Thomas C. Hart, U.S. Navy (USN) commander of naval forces (ABDA Sea). Until 12 February 1942. Adm. Conrad Helfrich, Royal Netherlands Navy (RNN) After 12 February 1942. Rear Admiral Arthur Palliser, (British) Royal Navy, deputy commander naval forces R. Adm. William A. Glassford, Jr. (USN) commander U.S. naval forces R. Adm. Johan van Staveren (RNN)