Help:Editing Breadcrumbs
Breadcrumbs
Breadcrumbs are the hierarchical links at the top of the page (for example, for this page, it's Empire / Help / Editing Breadcrumbs).
This is a very manual thing for MediaWiki. You have to edit a set of rules in Imperial:Breadcrumbs.
There are lots of ways it can work, but I think the easiest is to make sure every page is in a category (see Help:Categories for how to do that), and then use the category name to define the breadcrumbs.
For example, if the Imperial:Breadcrumbs trail contains:
* Rules @ [[Main Page|Empire]] > [[Rules Overview|Rules]] > * Help @ [[Main Page|Empire]] > [[Help]] >
then anything in the Rules category will have a breadcrumb trail of Empire (links to Main Page), Rules (links to the Rules category index) and so on.
If a page is in more than one category then it'll match the first one it finds.