This is a proposed bonus for a cavalry civilization such as the Vlachs, Serbs, or Jurchens.
The idea is that the Knight line would deal 25% trample damage to nearby enemies.
This may seem overpowered, but the catch is that this civilization would not have access to Bloodlines, which is a common trait among other cavalry civilizations.
The lower HP of the knights would balance out this strong bonus.
The civilization would still have access to Paladin and Blacksmith upgrades.
This bonus would be highly effective in certain situations, such as attacking enemy Archers, but not as useful for raiding due to the knights’ vulnerability to arrow fire.