 All of old Serbia had been overrun, and after only three years, Kosovo was once more in the grip of an invader.On 25 November, the Serbian High Command issued its official order to retreat, through the mountains of Montenegro and Albania, and join the Allies to continue the war out of the country.The Serbian High Command came to the conclusion that its army was not in a favorable position and condition for a counterattack, but more importantly that capitulation was a worse choice.