I'd watched the movie (against my better judgement) before reading the book. The film may have made more sense if I'd proceeded in reverse order! How I won the war is a very "British" satire, clearly the precursor of Dad's Army and similar satirical denunciations of the absurdity of war. Ryan's writing is clean and taut: the epigraphic beginnings of each chapter, taken from the memoirs and writings of senior politicians and WW2 officers, is a constant reminder of the reality of war's farcical nature. The narrative and main characters are fictional but suddenly we're reminded that the British, German, Italian, Greek, Russian and other armed forces to one extent or another had to live it. Ryan holds the absurdities together well, with only one or two lapses into farce. If anything annoyed me, it was reading what seemed at times an uncritical depiction of some of the sexual politics of the time. Nevertheless, Ryan succeeds in writing a novel that is a welcome relief from decades of Hollywood gung ho self-importance, with only extremely rare dalliance into insight and commentary. Read it. Then watch the film. And remember How I won the war was written and filmed in the 1960s, a very different time and place.