One notable example was the Eagle Squadrons, these being RAF Squadrons made up of American volunteers and British personnel. The first was formed; No. 71 Squadron on 19 September 1940 by followed by No. 121 Squadron on 14 May 1941 and No. 133 Squadron on 1 August 1941. 6,700 Americans applied to join but only 244 Americans got to serve with the three Eagle Squadrons,16 Britons also served as squadron and flight commanders.