The full operational activity of the three 'Eagle' squadrons (Nos 71, 121 and 133), which were RAF fighter squadrons manned by Amercian personnel during WW2. They were all formed before the USA went to war and were eventually transferred to the USAAF in September 1942. Illustrated with over 60 photographs, 20 colour profiles and 15 biographies of pilots who made history of the 'Eagle' squadrons.