France 1914- Delayed Disruption Reporting Optional Rule

[Al]

Night Fatigue – with this rule 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.

Not sure if your idea is to make it even more disruptive to move at night but the optional rule would seem to cover it. :chin: