 Following this defeat, the Austro-Hungarian 1st Army replaced the German 9th Army in the Oituz Region.The 15th Division was part of General Constantin Prezan's North Army, and it performed so well that later in the campaign the entire North Army was reduced to the 15th Division in the Oituz Pass, plus two brigades.These three units were designated the "Oituz-Vrancea Group" and assigned to the 2nd Army.