E-War units

The E-War units were cut units from Halo Wars 2. They were made to indirectly hinder the opposing forces. Both units that were made were permanently cloaked and had no weapons. They were in the game around May 19, 2016 but were cut shortly after.

Operative
The Operative was a UNSC unit could drop a cloaked Line of Sight beacon that made for spotting troop movements and providing Line of Sight for artillery. It could also hack enemy buildings to put them offline for a certain amount of time.

Infiltrator
The Infiltrator was a Banished unit that did similar stuff as the Operative, but its backpack was used for teleporting around.