Editor’s note: In accordance with the security protocols of the Ukrainian military, soldiers featured in this story are identified by first names and callsigns only. CHASIV YAR, DONETSK OBLAST – As he creeps between rubble-strewn garages near the central square of Chasiv Yar, the eyes and ears of the reconnaissance commander are glued squarely to the overcast midday sky. From the east, the unmistakable sounds of heavy fighting roll in without pause: not just artillery fire, but a full orchestra of machine gun and rifle bursts, anti-air cannons, and the occasional Russian airstrike. Most of tha…