Serving in the Jewish army is a mitzva, exactly the same as going to shul on Shabbos i.e. decorum is demanded.
Hashem even made a mitzva that the Jewish soldier in combat has to have a spade with him to cover his feces:
"And thou shalt have a spade among thy weapons; and it shall be, when thou sittest down abroad, thou shalt dig therewith, and shalt turn back and cover that which cometh from thee For the LORD thy G-d walketh in the midst of thy camp, to deliver thee, and to give up thine enemies before thee;
therefore shall thy camp be holy; that He see no unseemly thing in thee, and turn away from thee...." (Devarim 23:14).
Holy behaviour and at the same time
merciless ruthlessness against our enemies is demanded of the Jewish soldier,
especially in
Hebron, which is one of the 4 Holy Cities.
These poor sod "dudu" soldiers are the result of the abysmal education in chilloni schools.
And most culpable of all is the Zahal Chief Education Officer. Together with Rabin & Shulamit Aloni, they had all references to the words "Zion", "Judaism", "G-d", "Torah" and "Eretz Yisrael" expunged from the Zahal Code of Ethics in 1992.
Instead the Code preaches how Zahal soldiers should be "merciful", show "restraint", show "purity of arms", and "understand the pain of our enemies"!
The anti-Torah concepts of "havlagah" and "tohar neshek" used to drive R.Kahane spare, as very many Israeli soldiers have died unnecessarily because of them! No army in history held to such insanities except the Israeli one!