What does God think about me killing all these people?

This one question haunted SSG Stephen Conway, from hell-on-earth in Ramadi, Iraq to his home that became a battlefield. Brave Rifles takes you there, puts the gun in your hand, your finger on the trigger, the enemy before you, then walks you through the Sacred Scriptures to apply the healing salve of God's word to those stricken by the horrors of war.

What does God think about war? Should a Christian fight? What about Jesus? The Ten Commandments? What about atrocity?