The protagonists, severely handicapped technologically, manage to pull off victories in seemingly impossible situations using an understanding of basic physics and a great eye for situational analysis. It all makes sense and you can actually figure out the solutions yourself if you are smart enough. Enough information is presented for you to come to the same realisations that the MC does.
The political situation, while not explained at great length, also conforms well with what we see in the real world. The motivations for war presented here are all too real.
