Noun
parade rest (uncountable)
(US, military) A position of rest in which the feet are 12 inches apart and the hands clasped behind the back, or the left hand is behind the back and the right hand holds the rifle with its butt on the ground.
The admiral did not invite Ivan to sit, so Ivan took up a prudent sort-of parade rest and waited. Someone would tell him what was going on shortly; they always did, however little he wanted to know. Lois McMaster Bujold