The Battle of Arachova, took place between 18 and 24 November 1826 (N.S.). It was fought between an Ottoman Empire force under the command of Mustafa Bey and Greek rebels under Georgios Karaiskakis. After receiving intelligence of the Ottoman army's maneuvers, Karaiskakis prepared a surprise attack in vicinity of the village of Arachova, in central Greece. On 18 November, Mustafa Bey's 2,000 Ottoman troops were blockaded in Arachova. An 800-man force that attempted to relieve the defenders three days later failed.