What is the proper procedure when passing an Officer on foot in the same direction?

The proper procedure when passing an officer on foot in the same direction is to come abreast and in step, salute, and say "By your leave, sir." This procedure demonstrates respect for the rank and authority of the officer while maintaining military decorum. The act of saluting is a traditional sign of respect in the military, and stating "By your leave, sir" acknowledges the officer's position and seeks their permission to continue.

This approach not only upholds the chain of command but also fosters a sense of discipline and respect within the ranks. It is essential for maintaining a professional military demeanor and reinforces the standards expected in interpersonal interactions among service members. Moreover, it symbolizes the mutual respect that exists between ranks in the military structure.

The other methods would not effectively convey the necessary level of respect, which is fundamental in military conduct.