"...ye can discern the face of the sky; but can ye not discern the signs of the times?"

However, this itself will occur in response to such a global 'day of Jihad' in which groups of armed men worldwide will seek to anticipate the global sunday laws then being enacted internationally and in one fell swoop, upon one night, seek to eliminate from Planet Earth all those bearing the seal of God upon their foreheads... Most notably, moreover, the unique work of judgment and pitiless slaughter enacted by these human simulating angelic beings will begin at the very 'house of God' with those most vocal in their (misguided and deluded) professions of piety (as opposed to those of other, non-Christian, beliefs and professions)...  

War itself is and has ever been barbaric, a recourse resorted to by (in)human beings when all else has - or rather appears to have - failed. Whatever apparently Scriptural basis of legitimacy people have cited in its behalf. As some have so rightly suggested, whatever God is said to allow is often depicted as if it were His own intention; which it often isn't. Anyhow, though most people (in their moments of utmost dispassionateness) will defend to the rafters those who (happen to) kill/take (human) life - in defence of their own (life/lives) or that of their family, tribe or people - anytime one crosses that invisible line and begins to take innocent ('civilian') life they have thereby forfeited not only any legitimate human sympathy/understanding but much more importantly God's approval - which is the one , when all is said and done, that ultimately really, truly matters...