Büyük Menderes River
During the summer of 1920, the Greek army launched a series of successful offensives in the directions of the Büyük Menderes River (Meander) Valley, Bursa (Prusa) and Alaşehir (Philadelphia). The overall strategic objective of these operations, which were met by increasingly stiff Turkish resistance, was to provide strategic depth to the defence of Izmir (Smyrna). To that end, the Greek zone of occupation was extended over all of Western and most of North-Western Anatolia.