- Engineers stationed anywhere within Sokar bases (except for in Tiberium-related facilities) are made to wear red cloth beneath their armor.
- Engineers stationed in Tiberium-related facilities are the exception to the above rule and are made to wear green instead of red.
- Engineers going out into the field wear additional black beneath their armor. Their helmets are also changed to black instead of yellow.
Some Engineers are outfitted with semi-automatic light weapons, especially in extremely hostile environments. During urban combat operations, they are usually escorted by squads of Light Infantry and, in particularly dangerous cases, Sokar Cadre.
When in the presence of Light Infantry, Sokar Cadre, Tarantula Infantry or Empyrean Infantry, Abditus Engineers gain additional confidence and morale, allowing them to deal more combat damage.