According to the Eagle Squadron article of Tamar A. Mehuron in Air Force Magazine, most of those who volunteered had "solid backgrounds in aviation." However, several of the volunteers in their eagerness to get into the RAF and fly fast military aircraft had "embellished their logbooks, registering more flight time than was actually the case. I would surmise that some of those caught with inflated air time were either turned away or put into other parts of the RAF.
RAF standards did not require a college degree and a prospective pilot's eyesight could be 20/40 if corrective lenses could produce 20/20 vision.


Those who were taken in as fighter pilots were sent to an operational training unit for two to four weeks of flight training in Miles Master trainers. "This was an important step in establishing a common baseline of flight training in fighters. When volunteers completed their training phase, they were usually assigned to an RAF squadron."
RAF Fighter Command divided Britain into geographic sectors called groups. Each group contained major cities and RAF bases and several were used by the three Eagle Squadrons.
No. 11 Group includes the cities of London, Uxbridge, Dover, Southampton, and Portsmouth as well as the Eagle Squadron bases of North Weald, north of London; Biggin Hill, south of London; the coastal bases of Martlesham Heath and Southend-on-Sea, and Debden and Great Sampford.
No. 12 Group to the north included the cities of York, Manchester, Liverpool, Birmingham and Coventry and housed the Eagle Squadron bases of Church Fenton, Kirton-in-Lindsey, Colley Weston and Duxford.
No. 13 Group covered the north as well as Scotland and Northern Island, which housed the sole Eagle Squadron base of Eglinton near Londonberry.