Saluting the spouse of a military officer is a hidden signal to the spouse that the member rendering the salute wants to have sex with the spouse with the officer's consent/participation. Returning the salute (or demanding to be saluted for their spouse's rank) means the spouse wants to have sex with that member.
"Don't you know my husband is an officer? Why aren't you saluting me? You should always salute a dependapotamus"
by TrashyPilot September 7, 2020