Encumbrance 1 units and experience

[Shangrila00]

So I know units lose 1 point of encumbrance when they hit 4 stars of XP. What about units that only have 1 base encumbrance: do they become like other 0 encumbrance units where they never get melee fatigue, or would they still be encumbered by armor? I tried testing this by having a Virtue casting Wrath of God from an old test game for dom kill, but it turns out kills from Wrath of God don't count towards the caster. I'll probably try again with an Archdevil or something casting flames from the sky, but does anyone already know so I don't have to?

It's annoying how many dudes you have to kill to get 4 stars. Is there anyway to cheat up that much XP for an easier test?