Techina -“however why do people quote sefarim written in relatively recent times, without going back to the Chumash itself and see how Joshua reclaimed the land, how David fought for his people etc. We can all quote the rabbonim we specifically follow but why do people place rabbinical political ideology before Torah? There are differences between what is d’raita and what is d’rabbanan for a reason.”
Go away from Nach and go back to the five books of Moses. I’m not going into all the Aveirahs that a person can end up doing in the IDF -I want to mention right now the Chumash since you mentioned Tenach. The Chumash talks about how bad it is to be “Koach V’oizem Yodi…” and this is exactly how the Israelis and their IDF think. They think Might means Right.