The mental shift between realising this is animated.

there are so many things great about this aside from how hardcore this mosh pit is

- the shield that gets launched into the stratosphere as soon as the armies collide
- the guy on the left side who somehow manages to do a complete 180 in all of the mayhem and dives out of frame
-the guy on the right side who decides not to get involved and runs right past the camera
- the final dude who trips in the least natural way possible

Finally CGI has advanced far enough that we have the ending to Monty Python and the Holy Grail that we deserve