Originally Posted by
Auxtank
What's the difference between "Understood" and "Roger"?
Understood is used to acknowledge information while no need to act while Roger is used to acknowledge some information or an instruction after which the acknowledger will 'act'.
Nope, Roger does not indicate that you will carry out some action, Roger means you've received the message, nothing else. If there was an instruction to which you
will
comply, guess what you say?