It seems that Leo Tolstoy’s War & Peace («Война и миръ», Voyna i mir) novel is like the holy grail of every director who respects himself. It has been adapted for film, TV, opera, radio. IMDB Liste 9 War and Peace adaptations including 2 silent films. The novel was first published in 1869. The work is epic in scale and is regarded as one of the most important works of the world literature. It is considered Tolstoy’s finest literary achievement, along with his other major prose work Anna Karenina (1873–1877).

link