As well as a great diarist the late Alan Clark was a very good popular historian. Aces High was a slight departure for him in that field - a large format work covering the air war in WW1. With a less dense, but still highly informative, text his characteristic waspishness surfaces more often that in his WW2 histories. His choice of illustrations is first rate combining contemprary photographs with diagrammatic illustrations and the ubiquitous Michael Turner paintings. What always impresses about Clark as a military historian is his lack of peevishness about the purpose of war, death, and his genuine fascination with the tools man has created to serve that purpose. You also get a great sense of Clark's admiration for the flyers of WW1 who in their chivalry, sadism and handsomely tailored uniforms resemble very much the author himself. You can see why their story has brought out the best in his writing.