I am strongly against war of any kind.
I feel it is better to be killed, than to do the killing.
You should read Matthew 5:38-48
"You have heard that it was said, 'An eye for an eye and a tooth for a tooth.' 39 But I say to you, Do not resist one who is evil. But if any one strikes you on the right cheek, turn to him the other also; 40 and if any one would sue you and take your coat, let him have your cloak as well; 41 and if any one forces you to go one mile, go with him two miles. 42 Give to him who begs from you, and do not refuse him who would borrow from you. 43 "You have heard that it was said, 'You shall love your neighbor and hate your enemy.' 44 But I say to you, Love your enemies and pray for those who persecute you, 45 so that you may be sons of your Father who is in heaven; for he makes his sun rise on the evil and on the good, and sends rain on the just and on the unjust. 46 For if you love those who love you, what reward have you? Do not even the tax collectors do the same? 47 And if you salute only your brethren, what more are you doing than others? Do not even the Gentiles do the same? 48 You, therefore, must be perfect, as your heavenly Father is perfect!
Matthew 26:51-53
51 And behold, one of those who were with Jesus stretched out his hand and drew his sword, and struck the slave of the high priest, and cut off his ear. 52 Then Jesus said to him, "Put your sword back into its place; for all who take the sword will perish by the sword.
Jesus continues to say that this happens the way it was meant to happen, as I am sure God intends many wars to happen also. Im sure many wars have to happen to make the scripture of the revelation come true.
Matthew 24:6-9
6 And you will hear of wars and rumors of wars; see that you are not alarmed; for this must take place, but the end is not yet. 7 For nation will rise against nation, and kingdom against kingdom, and there will be famines and earthquakes in various places: 8 all this is but the beginning of the birth-pangs. 9 "Then they will deliver you up to tribulation, and put you to death; and you will be hated by all nations for my name's sake. 10 And then many will fall away, and betray one another, and hate one another.
Even though our hearts as Christians are against the idea, we have to sit back and let Gods will take its course. The revelation is upon us. Do not be troubled.