The 4th "Ali Demi" Battalion (, ) was a battalion under the 15th Regiment of Greek People's Liberation Army, founded during the Second World War. It comprised both from Cham Albanians and Greeks, of the region of Epirus and was established in May 1944. It consisted of 460 Muslim Albanians and 340 Orthodox Greeks, at the time of its creation.[citation needed] However, during the World War II occupation the majority of the elites of the Cham community had become corrupted by the occupying forces and the atmosphere against the local Greeks who had suffered under Germans, Italians and Chams, led to an explosive polarization which would have constrained any motivation for joint Greek-Cham resistance.