adv. phr. Not out of one's own desire or one's own free will; obligatorily; not freely. "So you were a Nazi prison guard? " the judge asked. "Yes, your Honor," the man answered, "but I was acting under orders and not because I wished to harm anyone."
UNDER ORDERS
Meaning of UNDER ORDERS in English
American idioms English vocabulary. Английский словарь американских идиом. 2012