RTF is a global modification that replaces all towns in the game.

I'll take another look with a fresh perspective... but I generally assume that a unit is a "large creature," occupying 4 squares...
P.S. Of course, it's clear that conditional fairies will cast their "Hive" spell, and the unit will slightly move, but if a Knight charges, the creature should fly away completely... but the damage is the same for everyone....

Added 5 minutes later
P.S. Should the amplitude be larger?