There’s definitely some weirdness in that. I feel like it’s an edge case, though, and could just say to either refer to them as the full Security Department, or capitalize Security as well. Or go the German route and just capitalize all nouns, they’re usually the most important part of a written sentence anyway.
Thinking about it further, there are a few use cases for caps in readability. Abbreviated, for example, so they’re not interpreted as a word. I think the only one I really struggle with WRT capitalization is the arbitrary capitalization of beginning words.
There’s definitely some weirdness in that. I feel like it’s an edge case, though, and could just say to either refer to them as the full Security Department, or capitalize Security as well. Or go the German route and just capitalize all nouns, they’re usually the most important part of a written sentence anyway.
Thinking about it further, there are a few use cases for caps in readability. Abbreviated, for example, so they’re not interpreted as a word. I think the only one I really struggle with WRT capitalization is the arbitrary capitalization of beginning words.