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No. 309 "Ziemi Czerwieńskiej" (Polish) Squadron
309 Squadron logo
Active	8 November 1940 – 6 January 1947
Country	United Kingdom
Allegiance	Polish government in exile
Branch	Royal Air Force
Role	Reconnaissance squadron; later fighter squadron
Part of	RAF Fighter Command
Nickname(s)	Ziema Czerwienska
Commanders
Notable commanders	Henryk Pietrzak
Insignia
Squadron Codes	AR; from 1944 WC

No. 309 "Land of Czerwień" Polish Fighter-Reconnaissance Squadron (Polish: 309 Dywizjon "Ziemi Czerwieńskiej") was a Polish squadron formed in Great Britain as part of an agreement between the Polish Government in Exile and the United Kingdom in 1940. It was one of 15 squadrons of the Polish Air Force in exile that served alongside the Royal Air Force (RAF) in World War II.^[1] It was at first a reconnaissance squadron, and later converted into a fighter squadron. It was named after the region around the city of Czerwień; which was then in southeastern Poland, and is now in western Ukraine.

The squadron was formed in the RAF base at RAF Renfrew near Glasgow on 8 November 1940, and declared operational on 5 December 1940. It was disbanded on 9 January 1947.^[2]

• Lewis, Peter (1968) [1959]. Squadron Histories, RFC, RNAS and RAF, Since 1912. London: Putnam. SBN 370-00022-6.

Wikimedia Commons has media related to No. 309 (Polish) Squadron RAF.

• "309 Dywizjon Myśliwski "Ziemi Czerwieńskiej"". polishairforce.pl (in Polish). – historic photographs
• "No 309 (Ziema Czerwienska) Squadron". Air of Authority – A History of RAF Organisation.
• Hodyra, Piotr. "Personnel of the Polish Air Force in Great Britain 1940-1947".