A bit abstracted, but Rise of Nations does consider supply and it is quite dramatic. Inside your (or allied) territory supply rules don’t apply, but in enemy territory your units take attrition damage (based on enemy tech) and artillery suffers a big debuff to fire rate (up to 50%). To counter that, you need to bring supply wagons (trucks in later eras) with your army - they project an aura that counters the “out of support” effects.
A bit abstracted, but Rise of Nations does consider supply and it is quite dramatic. Inside your (or allied) territory supply rules don’t apply, but in enemy territory your units take attrition damage (based on enemy tech) and artillery suffers a big debuff to fire rate (up to 50%). To counter that, you need to bring supply wagons (trucks in later eras) with your army - they project an aura that counters the “out of support” effects.