I remember seeing a broadcast version of a Godzilla movie where Godzilla fights Anguirus and breaks his jaw. I found out later that this was the Fake Godzilla in Mechagodzilla when I watched the actual film, but when I did, the scene played out differently. In my memory, they were fighting on an outcropping on the side of a mountain, and most notably, it was at night. Other than those two details, it was basically the same.
Now, see, this one is interesting, because I also remembered a mountain being involved in this battle. I first saw vs. Mechagodzilla
at the age of about eight, in '97 or '98, and didn't see it again until somewhere in the mid-2000s. My recollection of the first viewing had a distance shot of Anguirus on the left side of the screen, walking along a barren, sandy mountain side and kind of minding his own business, when Fake Godzilla approaches him from the right and attacks. I didn't remember any of the fight beyond that, though, and was surprised to find how differently it actually plays out upon later viewings.