Butcher has ventured into steampunkish high fantasy, though their power crystals get more play than their stem engines. I like this better than Dresden Files. It is definitely a series; the action of this book is resolved, but the next conflict is thoroughly set up.
it opens with two young women, Gwen and Bridget, entering the Guard by different routes, and a privateer, Grimm, finding trouble on his flight, after his successes against other Spire. (Mind you I'm not fond of the trope of the character of high birth who wants her own way in the face of family responsibilities, but he does put a twist on it.) The everyday life thereafter, hitting on such matters as a fellow recruit to the Guard picking a duel with Bridget, and some of the story of how Grimm left the Navy, winds into the threads of their conflict with that other Spire.
It includes the intelligent cats, having tea, the sanity of etherealists, the necessity of using recruits because they came after certain intelligence was betrayed, the woman Grimm married, Gwen's opinion of reading the manual, desperate fighting, and much more.