Light unit or Heavy Units - What determines this?

[EvilNed]

I am trying to make Illyrian Raiders into a Light Melee unit, but cant find the correct table. Any tips?

[Lemonater47]

A combination of main_units and land_units

In land_units Under atribute group set it to either melee_infantry or formed_infantry if you want to give them formation attack also.

In main_units Set their caste to light and their weight to medium. Most If not all light melee units have their weight as medium and not light. As that affects their speeds.