I have been expressly ordered that under no circumstances am I to assist or help you in any way once you have made planetfall.
"I must state for the record that we have been expressly ordered never to discuss that matter."
The protagonist had expressly ordered his followers not to rape women during the rebellion.
Where the child's attendance is not expressly ordered it is a matter for the child himself to decide where he has sufficient understanding to do so.
But you will see here that you are expressly ordered to arrest a sergeant whose name is Richard Sharp.
The humblest individual is not only shown the whole, but the Duke has expressly ordered the waterworks to be played to everyone without exception.
I've been expressly ordered not to mention the weirdways.
See also that no military moves other than purely routine ones are carried out--unless I have expressly ordered so.
"If I do something without being expressly ordered to do it but it helps our cause, will I still be punished?"
No action on my part unless expressly ordered by you.