The most shocking fact about war is that its instruments are individual human beings, and that these individual human beings are condemned by the monstrous conventions of politics to murder or be murdered in quarrels not their own
not their own이 quarrels수식 어떻게 하는건가요?
생략된 문장구조 어떻게 되나요? 역할은 부사인가요?

Sartre believed that each individual is responsible for choosing one course of action over another, that it is the choice that gives value to the act, and that nothing that is not acted upon has value
is acted upon 뒤에는 아무것도 안와도 되나요? 주어도 없고 전치사뒤에 명사도 없는것 같아서요