Allies at War: How the Struggles Between the Allied Powers Shaped the War and the World by Tim Bouverie

World War II: the good guys versus the bad guys. Democracy versus Fascism. Spitfires and Mustangs versus Messerschmitts and Zeros. It was all so simple, the world in black and white.

Not really. That may be the general plotline, but the alliances and connections that made up the Allied side were ever shifting, out of convenience or necessity, with endless sideshows and subplots. Personalities—some honorable, some prickly, some preposterous, some all three—could make or break a treaty or an arrangement and throw the whole thing into doubt. Promises were often made just to be broken.