This book can certainly be classified as one of the best informed, most realistic, yet simplest commentaries that we have on the strategy of the present conflict. The author, a novelist of repute, has served as a pilot in the R. A. F. and as an intelligence officer at the Air Ministry. He not only gives a lucid narrative of the war in the air up to the summer of 1941, but shows what faults Britain must correct if victory is to be won.