It seems you just decided to just see it as a precedent like this, but it is not actually related. You left the first step of of logic here. It's not the case of following "on ground" rules suddenly on something which was added long time ago normally for some reasons, espeeeecially if another country did in fact control another and language of this 1st country was indeed used in 2nd (so it's not correct to say armies and all this is irrespective). 

It's a revert of recent unverifiable massive mechanical edits with no verification (and all know it's done for political reasons too) - which is not allowed to do, user was banned for this, and created several alts to revert the reverts of those changes.

If you suddenly decided to mechanically translate all the names of all lakes, rivers, shops, military objects, clinics (just a sample of what this user did) - in Spain to German language, just as an example - you would be surprised to see all of this reverted and would also say it's an important PRECEDENT of following "on ground rule" strictly or what? :)