Glossary – Numbered units and command organisations
1 Fighter Wing – The higher tactical unit within which the three Spitfire squadrons trained, flew and fought.
2 Squadron – The RAAF Hudson bomber unit based at Hughes.
5 Fighter Sector – The air defence control unit responsible for collating radar data on enemy raiders, maintaining the tactical plot, and controlling the defending fighters’ movements via R/T commands.
7th Air Division – The Japanese Army formation responsible for planning air operations in eastern Indonesia, including on the Darwin front.
7 RSU – No.7 Repair and Salvage Unit at Pell, responsible for salvaging and cannibalising wrecked fighter aircraft, and undertaking repairs that were beyond the resources of the squadrons.
14 ARD – 14 Aircraft Repair Depot at Gorrie, responsible for tasks beyond the capacity of 7 RSU, for deep maintenance and major rebuilds of engines, airframes, and systems.
23rd Air Flotilla – The Japanese Navy formation responsible for planning air operations on the Darwin front, based at Kendari in the Celebes (Sulawesi).
31 Squadron – The RAAF Beaufighter unit based at Coomalie Creek.
49th Fighter Group /Pursuit Group – The USAAF unit that defended Darwin through most of 1942, comprised of three P-40 squadrons.
54 Squadron RAF – The British Spitfire unit within 1 Fighter Wing.
59th Air Regiment - The Japanese Army fighter unit responsible for escorting the 20 June raid and for the 22 June fighter sweep, equipped with the Nakajima Ki.43.
61st Air Regiment - The Japanese Army heavy bomber unit responsible for the main 20 June raid, equipped with the Nakajima Ki.49.
70th Independent Reconnaissance Squadron - Known under Japanese nomenclature as a ‘Direct Command Squadron’, this was the Japanese Army unit responsible for photo-reconnaissance over the Darwin area using Ki.46 aircraft.
75th Air Regiment - The Japanese Army light bomber unit responsible for the low-level 20 June Darwin raid and the 26 September Drysdale raid, equipped with the Kawasaki Ki.48.
202 AG/ 202 Air Group – The Japanese Navy fighter unit that was responsible for escorting the raids on Darwin through 1942-1943, formerly known as the 3rd Air Group.
380th Bomb Group – The USAAF heavy bomber unit that arrived in the NWA in June 1943, comprised of four squadrons of B-24s.
452 & 457 Squadrons – The two Australian Spitfire squadrons within 1 Fighter Wing.
753 AG/ 753 Air Group – The Japanese Navy bomber unit responsible for the raids on Darwin through 1942-1943, formerly known as the Takao Air Group.
934 AG/934 Air Group – The Japanese Navy floatplane unit responsible for anti-shipping patrols off the Arnhem Land coast through 1943.