In the Eastern Balkans, Matthew Hervey faces bloody war with the Turks. January 1829: George IV is on the throne, Wellington is England's prime-minister, and snow is falling thickly on the London streets as Lieutenant-Colonel Matthew Hervey is summoned to the Horse Guards in the expectation of command of his regiment, the 6th Light Dragoons. But the benefits of long-term peace at home mean cuts in the army, and Hervey is told that the Sixth are to be reduced to a single squadron. With his long-term plans in disarray, he undertakes instead a six-month assignment as an observer with the Russian army, an undertaking at the personal request of the commander-in-chief, Lord Hill. Soon Hervey, his friend Edward Fairbrother and his faithful groom, Private Johnson, are sailing north...