The Watchtower is an elevated sensor platform that increase the firebase's line of sight and can detect nearby cloaked units. Additional Watchtowers extends the cloak detection range. Each Watchtower occupies a turret slot.
The multi-modal stealth and jamming systems employed by the Covenant and Banished are a significant strategic challenge for the UNSC. Though improvements have been made, there is still a significant capability gap in detection range versus cloaking capabilities. Nevertheless, with microdrone clouds and hyper scanner technology acquired from former Covenant sources, UNSC firebases can deploy a short-range sensor network that will reliably reveal enemies otherwise shrouded by cloaking generators and active camouflage. Once detected, their location can be shared to all friendly units for targeting.