With Napoleon's invasion of Russia in 1812, Bibikov petitioned to serve in the army once more, and was appointed to command various militias, including those of St Petersburg and Novgorod. He and his forces distinguished themselves at the Second Battle of Polotsk, and at the Battle of Smoliani, where he was wounded in the leg. Unable to ride or walk, he fought the next two battles, at Borisov and Berezina, from a sleigh, and when his horses were killed at Berezina, he leant against one of his adjutants. His forces pursued the French on their retreat from Russia, though Bibikov was forced eventually to resign due to ill health. He returned to his political duties for a time in St Petersburg, and wrote an account of his father's life and campaigns. He died in 1822 while seeking treatment abroad, and was interred in the Alexander Nevsky Lavra.