order arms

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A position in the military manual of arms in which the rifle is held vertically next to the right leg with its butt resting on the ground.
• noun A command to assume order arms.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a position in the manual of arms; the rifle is held vertically on the right side with the butt on the ground; often used as a command