Well, I know of no such document for the French. There is a miltary legal code, but nothing like an Article of war that I know of. I was asking YOU if you knew of any.

For the Russians, I can be fairly sure that the answer was either "no" or "not applicable" when it comes to the question of restraint in the treatment of potentially hostile people (in or out of uniform). "Not applicable" since the regimental monks and emams preached that the French were demons sent from the Anti-Christ, and not even human.
By the way, if you think Portugal was bad, let me tell you about Russia some time. At least there were survivors in Portugal. rather absent from the area fo operations in Russia.

Oliver indicates (see other posts) that the Prussians were not too squemish about civilians either, but maltreating them without orders was frowned upon - "atrocity" being a command decision, one might suppose.

So perhaps the British were rather unique, though I suppose the Americans adopted the same ideas, if you want to count them.

But they were unique in many ways :
-- far far more money
-- limited campiagn goals
-- not rushing at all (5-6 years to take Iberia)
-- small, volunteer army
-- operating on friendly ground

One wonders what they would have been like if ordered to capture Moscow in one campaign?