Turkish attack was focused mainly on the seam of the Greek 1st and 4th divisions. By noon the Turkish I Corps had succeeded in carrying the Greek 1st division's trenches. The arrival as a reinforcement of the II Corps' 7th division in the afternoon prompted a Greek counterattack which was able to only partially restore the line. The Greek Army HQ in Smyrna had no clear picture of the situation. In its order at 23:00 hours on 26 August to the I and II Corps the Army expressed the opinion that the Turks had still not revealed the main axis of their offensive. The Army proceeded with its original plan, by ordering the Greek II Corps to prepare for a counteroffensive on the Turkish right flank, while the I Corps would keep its positions. The counter-offensive was expected to be launched on 28 August. These orders directly conflicted with the orders that the I Corps had already issued to the II Corps, and subsequently the I Corps ordered the II Corps to stop any preparations for a counteroffensive and resume sending its forces south to reinforce the badly battered 1st and 4th divisions. Due to the broken communications, the Army HQ in Smyrna didn't receive the notifications of the I and II Corps and had the impression that things developed as it had ordered. At 02:00 hours on 27 August (Day 2 of the Turkish offensive) Turkish artillery began its barrage again, and at 06:00 hours Turkish infantry resumed its attacks. The Turkish forces focused again on the seam of the Greek 1st and 4th divisions, and advancing steadily they managed by 09:00 hours to achieve a clear breakthrough in the Greek line when the Turkish IV Corps under Colonel Sami took the peak of Erkmentepe (). At 10:30 hours the Greek Ι Corps issued an order of general withdrawal some 20 km to the north of its original line, and the subsequent evacuation of Kara Hisâr. The order was not received by the Greek 1st division, whose telephone contact with the Ι Corps had been cut and couldn't establish wireless communication, and remained in position. By 13:30 hours its front was collapsing exposing the flank of the 4th division. The 1st division, together with the 7th division retreated without being seriously harassed by the Turks, and by 17:00 hours they had reached their new positions. Greek retreat towards Dumlupınar