In addition to the random inability to keep names straight after 9 chapters, I believe you do not mean
"Punishment."
Punishment doesn't mean what your saying; the word you seem to mean is:
"Expedition"
Also the term:
"Expeditionary Force"
There might be a Punishment Force, but those are called things like "reclamation" and the aforementioned "expeditionary."
Punishment, in this case, means that Allen (not Aren) is going to be disciplined for doing something wrong, and punishments only happen in return for something that is capable of understanding that it did something wrong; a dragon doesn't get punished, no matter how stupid you try to twist the words to make yourself look correct.
So pretty fucking please; with sugar on top; stop using that word incorrectly.