Roman-chronicle sanctified to "Feather and sword" one of the most interesting periods of Russian history - to participating of Russia in Septennial war, to the exploits and glory of the Russian troops reaching in battles to Berlin. In basis of events, besides battle episodes, all hidden motive of secret diplomacy of middle of the XVIII century is fixed. Espionage and court love affairs, where love closely interlaced with subornation and even direct treachery, resulted in knocking together anti-russian block. One of protagonists of novel is an escort de Еон, spy of Versailles at the Russian court "that 48 lived a man, and was 34 considered a woman, and in a full-dress uniform and in laces managed to glorify itself, identically doughtily owning a feather and sword". This novel became a that book after that about В.С. Picul began to speak as about a writer-researcher.