The Duhamel plan was a proposed Russian invasion of British-ruled India during the Crimean War, a war in which Russia was fighting Britain, France and the Ottoman Empire. The plan was drawn up by General Alexander Osipovich Duhamel [ru] and proposed to Tsar Nicholas I in 1854. Duhamel proposed five alternative routes but his preference was to march through Persia and Afghanistan and invade British India through the Khyber Pass. The plan would have required the support of the Afghans and Persians.
