The Battle of Smolensk, the first major battle of the French invasion of Russia took place on August 16–18, 1812, between 175,000 men of the Grande Armée under Napoleon Bonaparte and 130,000 Russians under Barclay de Tolly, though only about 50,000 and 60,000 respectively were actually engaged. Napoleon attacked Smolensk occupied by Russian General Bagration's corps and captured two of the suburbs.