IF YOU DON'T WANT TO KILL THE ENEMY DON'T GO TO WAR:

If there's one thing that sets Beevor apart from other historians - beyond his gifts as a storyteller - it's that he is not afraid to look at the most uncomfortable, even frightening subjects, but does so in a way that doesn't threaten the reader. There's rarely a judgmental note to his writing. It's like having Virgil there to lead you through the underworld: he doesn't leave you stranded amid the horror, but leads you back out again, a wiser person for having undergone the journey.

He has a knack for choosing controversial subjects at the right moment - when they are raw enough to touch a nerve, but not so raw as to be too painful to acknowledge. His latest is an account of the battle of the Ardennes in 1944. The book, which comes out this month, is a natural progression from his earlier history of D-Day. There is the same political tension between the British and American commanders; there is the same desperation in the fighting of ordinary soldiers on both sides; but at the heart of it lies another dark subject: the indiscriminate killing of prisoners. This, Beevor says, is "unmentionable", one of the last taboos of the war. "I still haven't read any American historian on the subject of the shooting of prisoners. And until recently I don't think many British historians have written about the British killing of prisoners. That was something the Germans did, but we prefer not to talk about our boys doing it."

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