We can learn from Humash, that the conscription of the Jews, as well as the killing of the Arabs (and lets be honest, with modern warfare, all war involves killing old people, women and children – this has been routine since they invented gunpowder in the time of the early achronim or late rishonim), REQUIRES A NAVI such as Moshe Rabeinu, or consultation with a Kohen Gadol and Urim v’Tumin, and direct communication from Ha-Shem. Without authorization from Ha-Shem, killing people in order to take their land would be murder, and a Jewish soldier would have to give up his life rather than transgress.
Someone, Bennett, Lapid, Netanyahu and Yachimovich really aren’t in the same league of Moshe Rabeinu. Indeed, anyone who mistakes the Kenesset for a bunch of Naviim, or confuses the “Kol Yisrael” (Israel Broadcast Authority) for a “Bas Kol” is either deranged or an apikores.