Call of Duty Wiki:Edit summary guideline

When undoing an edit for any given reason, it's important to let the user that made the edit know why you are undoing their edit. For this purpose, there is the edit summary box located above the "Preview" and "Save page" buttons while editing a page.

To make it easier for everyone involved, it is strongly recommended that you provide a reason for undoing an edit. Even if the edit is clearly vandalism, it is still helpful to simply write "vandalism" in the edit summary box.