Gordion lay along the front lines of the 1921 Battle of the Sakarya, the turning point of the Greco-Turkish War of 1919-1922. The Citadel Mound and several of the tumuli were used as defensive positions during the three weeks of fighting. The village of Bebi, located to the west of the Citadel Mound, was the main site of habitation in the area during the 19th and 20th centuries but was destroyed during the course of the battle. The modern village of Yassıhöyük was established in the aftermath of the Turkish War of Independence. It is part of the Polatlı district.