Into how many books is the novel ‘War and Peace’ by Leo Tolstoy divided?

War and Peace is a novel by the Russian author Leo Tolstoy. It is regarded as a central work of world literature and one of Tolstoy's finest literary achievements.

The novel is set 60 years before Tolstoy's day, but he had spoken with people who lived through the 1812 French invasion of Russia. He read all the standard histories available in Russian and French about the Napoleonic Wars and had read letters, journals, autobiographies and biographies of Napoleon and other key players of that era. There are approximately 160 real persons named or referred to in War and Peace.

The standard Russian text of War and Peace is divided into four books (comprising fifteen parts) and an epilogue in two parts. Roughly the first half is concerned strictly with the fictional characters, whereas the latter parts, as well as the second part of the epilogue, increasingly consist of essays about the nature of war, power, history, and historiography. Tolstoy interspersed these essays into the story in a way that defies previous fictional convention. Certain abridged versions remove these essays entirely, while others, published even during Tolstoy's life, simply moved these essays into an appendix.