In the area of Arachova took place one of the most victorious battles against the Ottoman Empire during the War of Independence in 1821. The leader of this battle was Georgios Karaiskakis who, after the fall of Missolonghi and a short-term help in the defensive battle of Acropolis of Athens, ended up in Central Greece trying to prevent Turks from getting their supplies from the north.
On the 18th of November 1826, he met the Turkish army near Arachova, and after a six-day long battle, he won, causing almost 2.000 casualties, including the Turkish leader Mustafabei. This victory was very important because it revived the morale of the Greeks in order to keep fighting for their freedom.
Karaiskakis since then was considered a hero and an actual liberator for the locals. In the courtyard of the church of St. George there is the monument of Karaiskakis in memory of the victorious battle and the freedom of Arachova.