Having retired after a career as a university lecturer in geology, Professor Patrick G. Eriksson has devoted many years to research for this series of books. He returned to primary sources and, crucially, as an associate member of the German Air Force Veteran's Association since 1974, he has interviewed and corresponded with more than a hundred former members of the Luftwaffe, from junior NCOs to Geschwader commanders. Such primary material is unavailable anywhere else and can never be gathered again. He is the author of 'Alarmstart' Vols I, II and III.