Considering that I've only read 11 chapters of this manga, this is just an initial impression of this manga and honestly, it's not good.
The story is all over the place, the art is ok, the characters are pathetic, and I didn't really enjoy reading this manga.
Like, I'll give you an example of how nonsensical this manga is. In the very beginning of the chapter we're introduced to a siege. A siege where all of the soldiers are OUTSIDE OF THE FORT. For a manga that focuses itself on medieval tactics, in what universe do soldiers fight outside of their fort unless they have no choice due to logistics? This manga doesn't focus on logistics, it focuses on very surface level tactics in regards to foot troops, archery, mages, calvary, and espionage. Hell, I see no mention of logistics. And that's only ONE example. There are an absurd amount of inconsistencies in this manga despite there only being 11 fucking chapters translated.
The concept of the manga is not that original either. There are a lot of other mangas and manhwas that deal with the isekai tactics trope in a far better manner than this one does. One of the things that are different in regards to this one is that the MC practically doesn't have a prep period for growth, and how much of a piece of shit character the MC ended up in.
Speaking of the characters, they're absolutely boring as fuck in this manga. None of them have any depth to them including the MC, and the thought processes of our MC ,who is supposed to be a "tactical genius", is incredibly surface level, bland, and nonsensical in regards to how he deals with internal politics.
Overall, it's not a good start. As with all reviews that don't review a piece of medium in it's entirety, take mine with a grain of salt. This manga could improve in the future, it could stay the same, or it could get EVEN WORSE than it is now but we'll have to see. However with the amount of shit I see in the beginning 11 chapters, I'm pretty confident in saying that this manga isn't worth your time.