Going just by the story, the characters, and my general entertainment throughout most of this book, I would have rated this at five stars. I’m giving it 4.5 stars, the same as the last two books, but I’m rounding down to 4 on Goodreads whereas I rounded the previous two up to 5. The reason I'm rating it so much lower, in spite of enjoying it so much, is that there were a couple things that particularly annoyed me, one being what I consider to be a major story discrepancy. More details are in the spoiler tags further below.
Aside from that, I thought the story was very entertaining. I enjoyed it at least as much as the first book, and slightly more than the second and third. I was especially engrossed by the end, and I’m eager to start reading the next book. Unlike the previous books, this one ended with quite a cliff hanger and I look forward to finding out how Laurence and Temeraire will get themselves out of their current predicament.
The rest of my comments include some spoilers for this book and also for the previous three, so I’ll put them in spoiler tags:
Victory of Eagles by Naomi Novik, the fifth book in the Temeraire series.