Young Writers Society

The book is set in a world that is pretty... modern. It has country names like 'The nation of Aldmist', 'New Verstage', etc. But it doesn't have castles and knights and stuff, all the stuff in the book is from the 21st century. Like buildings. Robots. High-tech. Guns.

The main characters are in a division in the nation of Aldmist. Aldmist's army is divided into seven divisions. Their division is named Dimidius, contrary to other divisions, which are named as numbers (Division One, Division Two, so on). It's because the Dimidius division only consists of thirteen soldiers who are half-animal and half-human. It's hard to create those people in labs. Other divisions have hundreds and hundreds of soldiers.

The plot starts when the division gets called to Loda, the capitol of Aldmist. The news is that the Third National War is starting (think WWI & WWII). There they find out that the government is planning to eliminate their division, so they escape. They are headed to Bylyn, the only nation that is staying neutral in the war.

Is this science fiction?

So, this is fairly close to science fiction, but I'd actually classify it as alternate history. A very specific type of alternate history known as Alien Space Bats. You set up a point of divergence wherein things get Odd, then everything else is on some level of progression along with the real world, except for the ramifications of that one thing change a lot of how society works.

So, technically, it's science fiction for all intents and purposes, and Alien Space Bats history isn't an actual genre term, but that's what comes to mind when you describe it.

It'd probably be classified as "Science-Fantasy," which is in and of itself its own genre. It usually involves tropes common to both Science-Fiction (the higher technology, aliens, robots, and space travel) but also ones native to Fantasy as well (constructed worlds, kingdoms, and fictional races and nations).

It is obviously in an alternate universe, or fantasy world so it can' the classified as fiction. Therefore it would probably be considered Science Fantasy as Prehistoric said.