At attention

The position of At attention, or Standing at attention is a military posture which involves the following general postures.

Standard At Attention Posture as described, trained and used in all military branches of the United Stars.

Standing upright with an assertive and correct posture: famously "chin up, chest out, shoulders back, stomach in"[1] Arms fixed at the side, thumb or middle finger parallel to trouser or skirt seam, depending on military drill specific[2] "Eyes front": head and eyes locked in a fixed forward posture. Ideally eyes unmoving fixated on a distant object. Blank facial expression.[3] Keeping the heels together, toes apart[1] No speech, facial or bodily movements except when as required by military drill.

[1] - this is meant for humanoid military members. If you do not have a chin, shoulders or a stomach your drill instructor will train you in the propper posture appropiate to your race. [2] - this includes tentacles, extra limbs and arms, wings and other body extensions. [3] - X101 up to the 700 series are exempt from this as they always have a bland facial expression anyway.

All member species that meet the Union Military Service requirements have a designated series of military postures. The old saying :" I don't have legs so I don't need to" has never really applied.