Which of the following case is an example of 'actus reus'?

Therefore, one can say that actus reus is an act which is bad or prohibited, blameworthy or culpable. Now, there are certain unique situations when the act in itself may appear to be a criminal act, yet it cannot be termed as actus reus. An executioner's job is to hang (no actus reus) An army man kills as a part of his duty (no actus reus)