The raf.mod.uk website lists 2535 men from Great Britain and 574 from overseas including all forms of aircrew. Around 2350 of these are thought to have been Allied Pilots.
There were 102 airfields split into 4 groups = 10, 11, 12 & 13. For a full listing and other information I suggest a visit to the Battle of Britain web @ http://www.raf.mod.uk/bob1940/11group.html
there were many who died. there were so many that many of the people in time that had tried to count have lost track. there was about 2800 people that died. that was what many people have come to.
Battle of Britain - casualties.
The reference to 'soldiers' in the question suggests that this was a land battle. However, the Battle of Britain (July-October, 1940) was fought entirely in the skies...