CompCamouflage makes hostile pawns that wear this apparel have their name hidden from the player, and they cannot be manually selected while on the map.

It is a comp class, so you just add ir in XML in the <comps> tag of an appropiate apparel. For example, this makes the ghillie suit in Vanilla Apparel Expanded work:

<comps>
	<li Class="VanillaApparelExpanded.CompProperties_Camouflage">
	</li>
</comps>