No. 307 Polish Night Fighter Squadron
No. 307 (Polish) Squadron, also known as No. 307 (City of Lwów) Squadron () was one of several Polish squadrons during the Second World War. It was formed as part of an agreement between the Polish Government in Exile and the United Kingdom in 1940. It was the only Polish night fighter squadron in RAF service. No. 307 Squadron was named after the Polish city of Lwów, and was nicknamed "Eagle Owls". History The nickname Lwowskie Puchacze (NOM) – "Lwów Eagle Owls" was chosen for the night fighter squadron, as the eagle owl is a nighttime avian predator that is present in Poland. The squadron inherited the traditions of the Polish pre-war 6th Aviation Regiment, that was stationed in Lwów (now Lviv), with a history dating back to the defence of Lwów and Galicia from invading Ukrainian forces in the Polish-Ukrainian War of 1918–1919. After its formation in Blackpool on 24 August 1940, No. 307 Squadron was assembled at RAF Kirton-in-Lindsey on 5 September 1940 as a night fighter unit, flying the Boulton Paul Defiant turret-fighter. It then took up residence at RAF Jurby, on the Isle of Man. The sole surviving example of the Boulton Paul Defiant, serial number