For this tutorial we will use the paratroopers and change their weapon from to a Thompson smg.
It's very easy ^_^
First, open your mod and go to attrib\attrib\ebps\races\allies\soldiers
and open airborne_infantry.rgd
In there, go to combat_ext\hardpoints\hardpoint_01\weapon_table
Now click(not on the +) on weapon_01.
In the right side you will see a few lines, what you need to edit is the weapon line
(the weapons are located at attrib\attrib\weapons)
let's change it to
and save your mod, and now you the paratroopers start with the Thompson sub machine gun.
I know it's not much, but it will help those who want to get started.
(for some reason the forum put spaces in my bold lines... so just delete them in the program)