Complete the following sentence: To replace the assault battalions, the 109th and 108th Separate Mountain Assault Battalions were formed on 5 and 11 December, respectively. Initially they were understrength due to being drawn from cadres from the 53rd and 54th Mechanized Brigades. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️
Battle of Debaltseve on the mountain summit.