Standing attention is a phrase commonly used in the military to describe a soldier's posture and readiness to receive orders. However, there are several synonyms that can be used to describe this same stance. "Standing at ease" refers to a relaxed but alert state where a person's feet are shoulder-width apart and their hands are clasped behind their back. "Parade rest" is another term that is used when a soldier stands with their feet shoulder-width apart and their hands clasped in front of them. "At the ready" is a phrase that can also be used to describe someone who is standing in a position of readiness, often with their hands close to their weapon or tool.