By Debora Patta, Steve Berriman, Tucker RealsSeva Kozhemyako, founder and commander of the Ukrainian Armed Forces' Khartia Battalion, and his men are among the forces battling to keep Russia from seizing what little remains of Bakhmut. The Ukrainian forces holding the front line, using the intelligence that comes from tech bunkers, sleep, eat and fight in shifts, right around the clock. They know that while Russian forces have been killed in staggering numbers trying to take the small city, more will come, and more will die, on both sides