Which war provides the main historical backdrop for War and Peace?

The main historical backdrop for War and Peace is the Napoleonic Wars.

Tolstoy sets the novel across the years 1805 to 1820, following Russian aristocratic families as Napoleon's expanding empire reshapes their society. Major events woven into the story include the Battle of Austerlitz, the Treaties of Tilsit, the French invasion of Russia, the Battle of Borodino, and the occupation and burning of Moscow.

The 1812 invasion is the book's dramatic center. Napoleon led the Grande Armée into Russia, but disease, hunger, distance, Russian resistance, and the disastrous retreat destroyed much of the force. Tolstoy uses these events not simply for battle spectacle: his philosophical chapters challenge the idea that famous commanders alone control history.

A common mix-up is identifying the setting as the Crimean War, which Tolstoy personally experienced as a young officer. That later conflict influenced his realism, but War and Peace is chiefly a novel of the Napoleonic era, especially the wars between France and Russia.