Meaning of close-order drill

close'-or•der drill'

Pronunciation: (klōs'ôr"dur), [key]
— Mil. Mil.
  1. practice in formation marching and other movements, in the carrying of arms during formal marching, and in the formal handling of arms for ceremonies and guard.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.