Night Fatigue

[Green]

This is covered in the Optional Rules Dialog of the PzC.pdf. It says;

"Night Fatigue – with this rule is selected, units that are active during Night turns will accumulate fatigue. The amount of Fatigue accumulated is up half the amount a unit would normally recover during a Night turn. It does not matter how far a unit moves or how many movement points are expended. Even units with no Fatigue may gain some variable amount of Fatigue if they are active during Night turns under this rule."

Quality would only potentially be a factor if you use the Quality Fatigue Modifier Optional Rule and even then as far as I am aware it does not apply to fatigue accumulated in this way.