The four drones were designed to carry bombs, but instead the men of Ukraine's Khartia brigade pack them with food, water and handwarmers and launch them in darkness toward the front line, a 15-minute flight away. The unit commander who goes by the callsign Kit, or cat, pilots the tiny uncrewed aircraft from a basement room he jokingly calls their Airbnb. Guided by the drone's night-vision camera, he drops the 10-kilogram (22-pound) packages one by one as close as he can to the position where as many as five infantrymen battle Russian forces in the late autumn chill. The delivery will hold them for two or three days. That's about as far as Kit dares look into the future. He knows that the reelection of Donald Trump will change something in his life, but as far as he and other Ukrainian soldiers on the front are concerned, trying to figure out how is a game for politicians. For him, all that matters is the distance he measures in the meters (yards) that Russian forces advance or ...