The last book I read was Monstrous Regiment, a Discworld book that had somehow slipped past me.

It was pretty good. It’s more or less a stand alone book in the setting with some minor cameos by established characters. There is one conceit that the book runs on, which you’ll likely catch onto early, but it manages to mix up how it uses that conceit to keep it fresh enough. The ending big action set piece is contrived even for Discworld action, but the book really isn’t about the action anyway so it gets a pass. B+ book, one of the lesser Discworld books which still puts it way above most other books.