The title of this book has a faint dash of Ouida, but actually it signifies not a dashing cavalry regiment but the officiers bleus of the French navy under the Ancien Regime, who were not of the nobility and so socially inferior to their aristocratic colleagues, though often (or usually) superior as seamen. Duyker has written a good businesslike account of a remarkable career. The book is very well presented, with genealogies, bibliography and glossary, many plates (some in colour), and above all plenty of maps. An appendix by Rex Nan Kivell recounts his rescue, in the confusion at Calais when the German’s were overrunning France in 1940, of the painting of Marion’s death. He rolled up the canvas and stuffed it down his trouser leg, doubtless walking rather stiffly. A wry footnote to history.