This is one of my favourite books and it tells the story of the horrifying assault on Badajoz in 1812. The British were in a foul mood, they had been given a hard time by the garrison and suspected that the city’s Spanish inhabitants were French sympathisers, so when they got inside they went berserk. Not a pretty story, but a compelling one, and made better by the baleful reappearance of Sergeant Obadiah Hakeswill. This is also, to my mind, the best of the TV programmes.