Status Updates From Bomber Offensive (Pen & Swo...

1942, the formative year, saw the switch from medium to heavy bombers (same crew, 3x the load) the introduction of radar guidance for guiding squadrons, enabling efficiently concentrated bomber waves capable of disrupting hard targets such as the smoky Ruhr area in the face of radar-guided AA guns & increasing numbers of nightfighters and worse weather conditions

Rare for a memoir, it can stand alone as a history of Bomber Command...