Yeah exactly... I get it that Ikta is trying to get this "you need to look at this from a different side"-thing going. But it seems so unfinished and the author tries really hard to make Ikta someone very special, just because he knows "science" (yet he never actually did any science himself outside of shaking containers).
What I'm saying is, he isn't really using knowledge about chemistry or physics for example. He's calculating, but that's something commanders should be anyway and from what we know so far, they were and are commanders that can do "nearly" (because he's MC) good as him.
I can't give the correct example right now.. you'd expect something like "Idiocracy" or No Game No Life... or that Yuusha-series where the demon princess introduced potatoes and all that kind of stuff.
Basically, it feels like he's supposed to use science to get an advantage in combat. But he isn't using science at all.