to all of this, they used artillery to basically flatten the entire city scape and that change the the not only the topography of the city. people were moved out and many died. that's the thing we're looking at. over 50,000 soviet soldiers died in the siege of berlin, the very last gasp took away 50,000 soviet soldiers. >> we know how much the russians have relied on artillery in the past. i want to get to the viewer question what else could happen here. this viewer asked could armed drones be used against the artillery that is attacking civilian targets? >> yes, they could. and in fact, armed drones are basically used to target all kinds of weapons, all kinds of instillations. it's very possible an armed drone could be used to go after artillery. all you need to do is know the coordinates and need to know exactly how to go after it, what kind of weapons load you would