Dear Ratface,
I'm a soldier in a war that people think is unjust. What do I do? -Shaky Soldier
Dear Shaky,
Suck it up. You took the man's coin. You do his job. He's not paying you to think. He's especially not paying you to engage your schizo imaginary selves in some morality ethics debate. You're a freaking soldier for crying out loud. He's paying you kill people. Kill who he tells you to. When that job's done come home and kill whoever you want. If you don't have the guts for it - pay me. I'll do the killing for you. If you can afford me. Which I doubt, soldier. -Ratface