Thank you, Susan. And I'm sorry, Categorization Project folks, but Categories are an all-around train wreck. There's got to be a better way.
How about a searchable database of all legitimate current categories? Then I could have searched 373 to get all occurrences of that string. If that search comes up empty, I could search "fighter group" to find a template. Similarly, with geographic categories, if you come up empty on a town, then you could search "county Louisiana" for example. That would likely yield a template you could use to create your new category.
Also, better instructions are needed for how to add a category.