This procedure is carried out at Nova Prospekt and the Citadel. Overwatch Soldiers are humans that have undergone extensive cybernetic modifications including brain and chest surgery, and implantation of various mechanical devices in the their whole bodies to the point of being enhanced cyborgs. In addition, they also serve as pilots and gunners of the Combine Hunter-Choppers.

Overwatch Soldiers are also tasked with guarding high-value areas such as Nova Prospekt and the Citadel. They can, however, be found anywhere the Combine requires direct military action, as the soldiers can be quickly transported to a desired area via Dropships. Overwatch Soldiers are initially encountered in the coastal wasteland outside Ravenholm, patrolling the highways for Resistance activity and staffing Combine outposts. During combat, soldiers make use of squad tactics and will attempt to flank or flush out enemies and provide cover fire for one another. Using these standard-issue weapons, Overwatch Soldiers typically operate in squads of four to six. Overwatch Soldiers are armed with MP7s, SPAS-12 Shotguns or AR2 Pulse Rifles, as well as MK3A2 grenades. These helmets have glowing blue goggles and appear to be a cross between an old Soviet PMG and PBF gas mask. Perhaps the most advanced piece of equipment found on Overwatch Soldiers are their helmets, which cover the head entirely and are equipped with air filters and radios.

Several insignias can be found on their arm pads, signifying their position in the Combine regime. Standard Overwatch Soldiers, like other soldier variants, wear standard-issue blue and grey camo body armor over their mid-sections with padding on their arms, thighs, and groin. Graffiti demonstrating an Overwatch Soldier fully modified.

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