Despite the quantity of material written about the Combined Bomber Offensive during the Second World War, the full human dimension of air combat has not been thoroughly explored. This book investigates the unique nature of aerial warfare and the men who took part. It analyses aircrew selection, reaction to combat, adaptability to stress, morale, leadership and combat effectiveness. First-hand reflections of combat flyers, published materials, reports and official documents are used to compare the efforts of the US Eighth Air Force and RAF Bomber Command. There is an important reason for this comparative method. Although the Allied effort involved two separate air forces, two different philosophical concepts and two distinct approaches, both organizations were committed to a common goal. Comparing the two allows insights into the nature of air combat and its effects on aviators. Aircrew attitudes and motivation are examined, as are the physical and mental hardships which affected aircrew morale, cohesion and combat effectiveness.