HMSO, 1st ed., 1994. 140 pp., frontis., 8 cold., plates, numerous b&w photo-ills., + ills., + maps & plans. Card covers; 29 x 21cm. Top corner near spine a little kinked & damp marked o/w V.G. For the armed forces, aircraft recognition meant accurately distinguishing the enemy on land, sea and in the air, whether by 'MK 1 eyeball', by Radio-Location blip or by Intelligence deduction. Identification Friend or Foe began as a political expedient during the First World War but, despite the lessons learned, its vital significance was not fully realised until late 1941 when pressure was applied to save allied lives from 'friendly fire'. For the first time this book traces the complex history of aircraft recognition. Extracting from official documents, complete with all their political meanderings, and from 'restricted' service publication, it exposes both the successes and the tragic mistakes which have coloured the development of aircraft recognition from 1914 until the wind-down in 1946. Lavishly illustrated.