I understand that people do want to play those kinds of characters, but that would nullify the intent of making each deciaion having a legitimate impact on the world that, in turn, impacts the characters. This would be the psychological side of war. Whether or not the characters participate is irrelevant. They'll need to eventually make hard choices that root in the war, and it would be counterintuitive to human nature not to care about the results of a tough decision, to just be like "wow, I just had to kill an innocent to help this soldier to get to the front lines and protect this city. I'm hungry. Where can I get a taco?"