Military personnel wears a subdued color flag patch in the field when camouflage is essential. Subdued flags often consist of black and various shades of a gray color.
If you are to wear this on your shoulder, it is recommended that this patch be worn on the left shoulder. This placement is important as it means that the soldier or person wearing it runs forward to battle instead of retreating. The moon and the star should be at the front and the stripes should be flying to the back.