One of the scenarios which popped up in Aggressors: Ancient Rome Steam workshop not too long ago is called "Centurion". Its creator is a fan of an old-school...
You can tag anything on IndieDB on IndieDB, and all tags can be voted up/down by the community depending on their relevance.
Official tags, as well as up-voted tags will appear higher in the list as they are deemed the most relevant.
If you discover a page that does not have any tags applied, why not help out the community by submitting tags, or posting a comment with #tags in it, which will be automatically linked.