Well, without more context, it's hard to say exactly. 'Dragon division' could imply some sort of classification or group within the story of the novel. It could be a secret organization that has something to do with dragons, like they study dragons, or they use dragon powers for some purpose. Maybe it's a story about a hero who joins this dragon division and has all kinds of adventures.
I'm not sure specifically as there could be many novels with that name. It might be about a division in a fantasy world related to dragons, perhaps a group of dragon riders or a dragon - themed military division.
Since we don't have much information about this 'dragon division novel', it could be a wide variety of things. It might be set in a medieval - like fantasy realm where the dragon division is a key part of the kingdom's defense. The novel could explore the relationships between the members of the division, their training, and their battles against enemies, whether they be other humans or some sort of dragon - related threats. There could also be elements of magic and mystery associated with the division, and the story might follow the journey of a character as they rise through the ranks of the division or discover secrets about it.