Fighter complement is handled in Scripts\Library\eawx-mod-icw\gameobjects - Unit names need to be exact otherwise they won't work; look in Data\XML\Units to see what the right names are.

The files that handle this should be units_fighters and templates_fighters, you can just copy and paste to avoid typing it all out. If you want a half or double squadron, add _HALF or _DOUBLE (respectfully) to the end of the unit string.

Awesome, I think I understand. Thank you.