Fast, authentic, action-adventure story of a flying, fighting Englishman in China in 1930, a mercenary, but a mercenary believing in the justice of his cause, by a R.A.F. pilot who has experienced much of this book. It's good -- it could have been tops with a little tightening a little reticence. When Bill Monroe, a seasoned professional flyer, and Baron Valkenborn, a great anti-Nazi General who had spent ten years in China building up her new army, run up against dud ammunition, they go to Hongkong where they soon get at the source of the trouble. There is Sara, Bill's girl, captious, captivating, selfish, who can't understand Bill's fight for China. There is Nellie, a dancer, who precipitates the showdown with the American dope runner and substituter of ammunition. Good excitement, obvious though it may be. Rentals more than sales -- men and women.