Abstract: A marker for attachment to a helmet head covering or the like of a friendly force member, and more particularly to an on-the-go hand securable marker having at least one extension with a retaining head for inserting into a hole in the uniform with the retaining head sufficiently rigid to prevent withdrawal therefrom under field conditions with the marker having a limited wavelength reflective surface thereon to enable a person observing under nighttime conditions to determine if a person is a friendly force member by the presence of reflections of electromagnetic radiation from the marker on the friendly force member. If field conditions change one can quickly remove the marker and replace the marker with conventional camouflage materials.