Ten American pilots flew with units under the command of RAF Fighter Command between 10 July and 31 October 1940, thereby qualifying for the Battle of Britain clasp to the 1939-45 British campaign star. There were 10 Irish, 13 French, 20 south Africans, 21 Australians, 29 Belgians, 84 Czechoslovakians, 86 Canadians, 98 new Zealanders, and 139 Poles that fought in the Battle of Britain.
Three Eagle Squadrons made up of exclusively of American pilots and formed between September 1940 and October 1941. These were No 71, 121 and 133 Squadrons. The Eagle squadrons operated as part of the RAF Fighter Command on convoy escort duties and fighter sweeps over France. All three were involved in the intense battle of Dieppe on 19 August 1942. All the Americans who flew in the Eagle Squadrons - 244
I shouldn’t have said “hundreds”, but I got excited.