Empire of Ivory (Temeraire, Book 4)

Tragedy has struck His Majesty’s Aerial Corps, whose magnificent fleet of fighting dragons and their human captains valiantly defend England’s shores against the encroaching armies of Napoleon Bonaparte. An epidemic of unknown origin and no known cure is decimating the noble dragons’ ranks - forcing the hopelessly stricken into quarantine. Now only Temeraire and a pack of newly recruited dragons remain uninfected - and stand as the only means of an airborne defense against France’s ever bolder sorties.