No. 302 (City of Poznan) Polish Fighter Squadron RAF (Polish: 302 Dywizjon Myśliwski "Poznański") was a Polish fighter 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 several Polish fighter squadrons fighting alongside the Royal Air Force during the World War II.
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Group photograph taken in Northolt UK, in 1940
b&w: http://www.ww2incolor.com/poland/302+group.html

No. 302  Polish Fighter Squadron RAF

B&W original (property of Bundesarchiv):  

http://www.ww2incolor.com/german-air-force/300px-Bundesarchiv_Bild_146-1978-043-02__Focke-Wulf_Fw_200_C_Condor.html

Fw 200 C 'Condor'  (col.)

A Martins PBM-5 Mariner takes off with the help of a pack of rockets, most commonly known as JATO. 

B&W original photographed by Lt. Comdr. Horace Bristol, USNR. (U.S. Navy Photo). 
Version posted on this site: http://www.ww2incolor.com/us-air-force/nara___520754.html