How Boris Nemtsov's last political party died, Kremlin-funded rap videos, and Medvedchuk's sugar momma Friday, September 7, 2018 This day in history. September 7, 1812, marked the bloodiest battle of the French invasion of Russia, when more than 250,000 troops clashed at Borodino, resulting in at least 70,000 casualties. Napoleon captured Moscow seven days later, but it proved to be a pyrrhic victory.