The squadron was formed at Royal Flying Corps Ripon (RFC Ripon) on 20 December 1917 as a night-flying training unit, moving shortly afterwards to Sutton's Farm.[1] This work continued until the end of World War I. On 1 March 1919, the squadron was disbanded.
The squadron was re-formed as part of No. 5 Group RAF on 15 October 1944 at RAF Bardney near the village of Bardney in Lincolnshire. However, Jefford in RAF Squadrons lists the reformation date as November 1944.[2]
The commanding officer was Wing Commander J. S. Shorthouse. Shorthouse had been born in Portsmouth in England in April 1920; joined the Royal New Zealand Air Force in April 1939; and transferred to the RAF in January 1940.[3] He commanded the squadron in 1944-1945. He was awarded the Distinguished Flying Cross for an operation that predated his command of the squadron: he gained his DFC on 2 November 1943 for a bombing raid in September 1943.[4]
No. 189 Squadron was among the 107 Lancasters and 12 Mosquitos of No 5 Group which attacked the oil refinery in Tonsberg in Southern Norway on 25 April 1945 in the last raid of the war flown by heavy bombers of RAF Bomber Command.
In July 1945 the Commanding Officer, Wing Commander Shorthouse, transferred back from the RAF to the RNZAF.[3]
After the war the unit was involved in dropping food to the Dutch and repatriating POWs until it was disbanded on 20 November 1945.
Target attacked on 3rd run, on 1st run attacked by fighter. R.T.I clearly seen in break in cloud. Flares seen well, N of A/P. Met. good. Red and green T.I.'s seen on 3rd run. Mod. amount of flak over target but not heavy. Considered successful sortie.
Numerous explosions Orange, black smoke rising 4,500 ft. Concentrated large fires over the whole area 2209 hrs. Target was identified visually and marking very good. A large number of fires were burning right on the target and it was a very good effort. Considered successful sortie.
Bombing appeared well concentrated, two large explosions seen before bombing and one very large one at 23471⁄2 with quantities of smoke. Marking thought to be good. Sortie completed.
Notes
^Chorlton, Martyn (2014). Forgotten aerodromes if World War I. Manchester: Crecy. p. 171. ISBN9780859791816.
Jefford, C.G. (1988). RAF Squadrons. A comprehensive record of the movement and equipment of all RAF squadrons and their antecedents since 1912. Shrewsbury: Airlife. ISBN1-85310-053-6.
Moyes, Philip J. R. (1964). Bomber Squadrons of the R.A.F. and Their Aircraft. MacDonald.