Ukrainian troops use an R18 drone to drop modified anti tank grenades on a Russian T-72 tank. The second device makes a direct hit on the vehicle.

The R18 is a helicopter drone with eight propellers, a thermal camera, and remote controlled arms that hold and drop munitions on command. Ukraine reportedly has several hundred of the unmanned aircraft.

The munition used was reportedly an RKG-1600, which is essentially a Soviet-era RKG-3 shaped charge anti tank grenade that has been modified with tail fins for more accurate flight. The tank crew likely had no idea what hit them.