The 1812 Overture (French: "Ouverture solennelle "L'Année 1812""; Russian: "Торжественная увертюра 1812 года", "Toržestvennaja uvertjura 1812 goda") (Op. 49) is an orchestral work by Pyotr Ilyich Tchaikovsky. It commemorates Russia's 1812 defense against Napoleon's advancing Grande Armée at the Battle of Borodino, during the French invasion of Russia.