Under the aegis of the 2nd Amendment, I carry my sidearm with me wherever I go.
It's a crying shame that Sweetheart's puppies could not prosper under her aegis, instead of being turned over to their "father."
Under the aegis of his genuine courage and practical wisdom, the Aristotelean virtuous agent is capable of exhibiting justice toward others.
--Mr. Big Food
King Arthur always traveled under the the aegis of his own banner.