Military Parade, North Korea

Easy: Legs remain at At Ease position, arms are brought to the sides to a more natural standing position. Member may relax their muscles and make minimal movements. U.S. usage is "At Ease," however a common mistake in U.S. military practice confuses "At Ease" with "Rest".
Relax: Legs remain at position at ease, member may make more significant movements or look around. Members may not move the feet. If the troops are not being addressed by a commander, they are generally allowed to talk quietly. U.S. usage is "Rest."