 Both the Austro @-@ Hungarians and the Serbs suffered heavy casualties , with more than 20 @,@ 000 dead on each side . The defeat humiliated Austria @-@ Hungary , which had hoped to occupy Serbia by the end of 1914 . On 22 December , Potiorek and von Frank were relieved of their respective commands , and the 5th and 6th armies were merged into a single 5th Army of 95 @,@ 000 men . 
