That’s what the traditional wisdom dictates anyway: the harder it is for Ukrainian drones to watch and enter the battlefield, the more chances that small Russian infantry groups have of trudging their way to Ukrainian positions unscathed. After a day and night of steady snowfall, the sky begins to clear just before dawn, during the silent drive to Ukrainian drone positions south of Kupiansk in Kharkiv Oblast.Closer to the ground though, a stubborn layer of fog continues to hang, through which hares and deer can be seen bouncing out of the way of the drab green pick-up truck.The drone team wakes up around six in the morning. Though less than two kilometers from Russian positions themselves, they have set up a comfy dugout, complete with bunk beds and a heavy-duty gas heater.