When passing an officer going in the same direction, what should you say?

When passing an officer going in the same direction, the appropriate expression is "By your leave." This phrase reflects proper military etiquette and demonstrates respect for the officer's rank and position. It is a formal way of seeking permission to pass, acknowledging the authority of the officer and maintaining the traditions of military courtesy.

Using "By your leave" indicates recognition of the hierarchy in the military structure and shows your adherence to protocol. This tradition fosters discipline within the ranks and helps to maintain the decorum expected in military environments.

The other responses do not adhere to this specific context of passing an officer. While phrases like "Sir, yes sir" and "With your permission" might convey respect, they are not the standard response in this particular situation. "Hello, sir" is informal and does not align with the traditional military customs associated with passing an officer. Therefore, "By your leave" is the most appropriate and respectful choice in this scenario.