In the early morning of 18 August, the Austro-Hungarians launched another attack, with the intention of pushing the 1st Šumadija Division off the Šabac bridgehead to allow the 5th Army to advance. However, the attack failed as the Serbs defeated the Austro-Hungarians at the Dobrava River, forcing their surviving soldiers to withdraw. Elsewhere, the Serbian 2nd Army's counter-offensive continued along the Cer and Iverak, with the 1st Combined Division attacking the village of Rašulijača and coming under severe pressure at Kosanin Grad. The first Serbian assault was fought off, but a wave of further attacks followed throughout the night. In the early morning of 19 August, the Serbs finally defeated the Austro-Hungarians and seized the small town. The 1st Morava Division drove the 9th Infantry Division from its position and fought off the division's subsequent counterattack, inflicting heavy losses. The 4th Corps renewed its attack against the Šumadija Division, forcing the Serbs to withdraw having only sustained light casualties. Because the 4th Corps did not break the Serbs, the Austro-Hungarian division was unable to alter the direction of its advance towards Cer Mountain, since doing so would have put the Šumadija Division in a position to attack the 4th Corps from the rear. As a result, the 4th Corps was unable to join other Austro-Hungarian forces fighting at Cer.