I believe Banner of the Damned to be a really frustrating read. I'm a great fan of Sherwood Smith's Inda series - and of the concept of her fictive world Sartorias-Deles. The artificially-reduced violence (that is probably just as artificially heightened at times, and this is no authorial magic wand, it's part of the plot), the high magic mostly useful as a form of service and health-related tech, the countries slowly evolving and the morally neutral stance on warrior cultures vs. socially "overdeveloped" settings, the unclear but always-present enemies and the vagaries of fate paint a very complex picture in the reader's mind. Generally, Sherwood Smith uses a third person omniscient POV, but in this particularly book she's gone with first person with a few omniscient "tricks".
It doesn't work as well, since the main character is really too ambiguous and difficult to pin down to offer a skewed, exciting narrative. She simply seems to adhere to whatever, be it plot, sub-plot or important character. She jettisons both good sense and ideals whenever convenient, and she of course dusts them up promptly to move the plot along. There is really no inner conflict here. This is not, probably, how Smith envisioned her, but it's really like this that it comes off.
The MC-narrator does have a personal life, but her choices always feel anodyne and deeply introvert, with a selfish desire to be left alone that is later rued when it's quite past the point where it would have felt good for the plot. I have no problem with introvert real people. Introvert novel characters that are free to lock themselves up and lose the thread of the events for months are really a strange choice, even if it is to compress "downtime", because Smith does it also at times where it would be interesting for the character to participate. Of course, our MC never participates in anything, she sidelines herself, watches and almost always refrains even from offering a personal view or judgement.
I don't really think the author was up to write in first person. No matter the roundabout way she chose for it, she feels like she's faking a third person omniscient, sliding back in what she likes best, even using magic as an excuse at times. Yes, I don't want to be too spoilery, but this book is actually capable of weaponizing third person omniscient, at times. This kind of tells me where Smith true heart's desire really laid.
This book would work, and even its characters would be ok, if only it wasn't split neatly in two. The first part, after a "growth montage" where our MC is such a wet hen so as to actually miss adolescence, is ok for a few long chapters, but it begins to draw and draw. Conflicts feel low stakes, commitments to be made with boredom, or as an afterthought. Conflicts spring up suddendly to be quenched with a nod. Endless courtly maneuvres which are absolutely not riddled with heavy decisions are presented glacially. Characters in crisis react as swiftly as czarist menial bureaucrats. People refuse to speak with each other always citing culture as an excuse (we are to civilized to speak about feelings. We are too warrior-like to speak about feelings. We won't speak about feelings because then we would be in danger in this deadly paranoid castle) The main character either despises or is uncomfortable with anybody else. She's all right with spying them, though, because she seems to be unable to see boundaries and connections outside of a social contract level and seems to act only on a "I'm supposed to" basis. She sounds like an oblivious, emotionally stunted imbecile even in her thirties.
The second part of the novel, which is about Marloven (they were still "Marlovan" in Inda) is better. The plots are fine, the stakes are fine, you can emotionally invest in the other characters. The MC of course won't. Here the MC doesn't really understand how to get to know anybody new, and refuses to engage satisfactory with the fellow stragglers from her own culture. She is quite literally whisked away with a plot-related task and avoids to think about all the stuff happening around. She is part of the plot, but completely cut off of it, if this makes sense. Of course, she couldn't be really embroiled in it, it would go against the premises of the character, but an empty narrator that on a whim is given a lot of decisions right at the end is as clunky and distasteful as you would surmise. Still, it's far better than the first part, and pretty engaging.
I would have been far kinder with this book if it didn't feel like Sherwood Smith was scratching her history and plot matching itches more than developing riveting characters. We don't get enough time with the few interesting ones, with the Marloven Academy, with the kings and jarls or the Colendi politicians. We don't get to appreciate the hot heart of the social warfare and what I keep calling high stakes. At times, baking bread and torturing your own friends for political gain seem to have equal emotional weight for most characters. Everything seems to be neutered, and declawed. Inda wasn't like this - even there Smith seemed to make flash decisions (fate striking, sudden revolts, betrayals) after whole chapters, whole years and storylines of people getting numb towards leaders and friends taking bad decisions, brutality, violence and cruelty. This is also humans work, at times, but only at times. In Banner of the Damned people get numb towards a whole spectrum of existential and emotional drama.
When you compare the really circuitous, plodding character developement and social maneuvering to the quick ending, one can't really ask of himself: "really, wasn't there a quicker route to get to the world rocking deflagrations?". It's a matter of rhytm, and Smith here dropped the ball a few times.