Watch VoirFilms. In 1812, as Napoleon's army invades Russia, Kutuzov asks Bolkonsky to join him as a staff officer, yet the prince requests a command in the field. Pierre sets out to watch the armies' impending confrontation. As the Battle of Borodino rages, he volunteers to assist in an artillery battery. Part three of the four-part adaptation of Leo Tolstoy's 1869 novel.