@LukeAlmighty Imagine being in the Sevastopol fortifications and a Karl Gerät 2 ton mortar shell lands 100 metres in front of you and just obliterates everything in the section. Then Schwerer Gustav fires and an 8 metre long, 7 ton armour-piercing shell tears through the several layers of earth, a concrete reinforced elevated trench, and a couple of buildings behind you. I don't think anyone in the world would have seen more terrifying artillery than that.
Also, sorry for the music.
The video is amazing, but the audio had to be chosen by an ape.