As the US looks to Ukraine for the latest in modern warfare technology advancements, The Post visited a Ukrainian assault unit using advanced land and air drones that are defining the future of warfare. From ground units that lay mines and fire assault rifles to flying drones that drop grenades, Ukrainian Armed Forces are constantly deploying new technologies — and making regular tweaks to perfect them — on the battlefield. “This brigade systematically uses assault drones in its operations,” a UAF drone unit commander who goes by the callsign “Maher” told The Post. “They close the distance between Russian and Ukrainian troops because they can go farther than is safe for troops.” All of the drones used by Maher’s unit are designed and produced in Ukraine, where developers can have instant access to troop feedback on how to improve perfect their products.