The Battle of the Alma took place during the Crimean War between an allied expeditionary force and Russian forces defending the Crimean Peninsula on 20 September 1854. The allies had made a surprise landing in Crimea on 14 September. The allied commanders, Maréchal Jacques Leroy de Saint-Arnaud and Lord Raglan, then marched toward the strategically important port city of Sevastopol, 45 km away. Russian commander Prince Alexander Sergeyevich Menshikov rushed his available forces to the last natural defensive position before the city, the Alma Heights, south of the Alma River.