One of the saddest things that could happen in war or combat was friendly fire. Although with the advent of better technology that has been lessened by a large degree. With the introduction of artillery and heavy munitions it was something we needed to plan for.
With Exa and the Bella's Wizards issues such as suddenly shelling our allies should be impossible. Intercepting or giving out false orders would be impossible unless the enemy had the means to hack the Hellsend Networks.
It would be great if that was all I had to think about. With the addition of soul and {fates} what normally was fiction now turned into real concerns. Fighting against Bifrons and the Vampires gave me a glimpse of how dangerous such mind control could become in battle.