 Complete the following phrase:  After the victory at the Battle of Kirk Kilisse the Bulgarian First and Third armies advanced to the south in pursuit of the Ottoman Eastern Army and cut the line of communication between Adrianople and Constantinople. The 3rd Balkan Division was ordered by the commander of the First Army to remain around Adrianople, to protect the armys rear and cooperate with the Second Army. With the fortress now almost completely isolated, its commander Shukru Pasha ordered a new attack on 16 October with 18 infantry battalions against the Bulgarian 38, 19 and 29 infantry brigades but it soon failed and the Turkish troops retired to their main defensive line. On the same day with their main forces engaged at the 