The Emerging Combine Structure

The Citadels are towering Combine megastructures deployed on subjugated worlds as symbols of absolute control and command. While often perceived as monolithic headquarters, their true function is multi-faceted: Citadels are central command spires, military bastions, population control hubs, and dimensional relay cores- integral to maintaining Combine authority on planetary scales.

On Earth, construction of the Citadel network began shortly after the Seven Hours War and the subsequent Unification Treaty. The Combine selected eight primary terrestrial locations as strategic loci for these spires, aligning with major continental population centers and key dimensional fault points. As of 2014, all planned Citadels are still under construction, with foundational infrastructure in place but none yet reaching full vertical completion. Each site hosts a Citadel Anchor, the early-phase core of the structure.

The Role of the Citadels & Anchors | Pre Suppression Field

The Anchors are subterranean constructs that stabilize transdimensional energy and support early infrastructure. Though the global Suppression Field described by Dr. Breen in later broadcasts does not yet exist, the Anchors emit limited, localized suppression fields. These fields interfere with human reproductive biology within controlled zones and concentrate around urban centers intended for long-term occupation.

Anchors also maintain a tenuous dimensional interface between Earth and the Combine Overworld. This early stabilization reduces the risk of “Portal Storms” and lays the groundwork for future energy relays, phase-through transportation, and interdimensional communication.

Air Surveillance: Early Scanners operate above urban centers, relaying reconnaissance and deploying minor ordnance when needed. These operate alongside passive observation tools like City Scanners and Civil Protection patrols.

Dimensional Interfacing & Stabilization: Anchors maintain stability between Earth and the Overworld (the Combine's interdimensional network), laying the groundwork for future phase-through transportation and signal relays during Early occupation where portal energy is still highly present in the occupied worlds atmosphere.

Military Deployment Nodes: Even at this Early phase, the Anchors function as fortified Combine strongholds. They house compact fabrication bays, repair bays, containment blocks, and bio-storage pods for dormant Synthetics.

Operational Capabilities and Defense Contingencies

Citadels are designed as much for psychological impact as military might. Their sheer scale, featureless surfaces, and partial visibility on the skyline are intended to project inevitability. Humans observing construction sites are meant to perceive an unstoppable, eternal presence; even as most systems remain incomplete.

For the Combine, Citadels are tools of preparation: they convert occupied cities into staged environments for population control, experimentation, and eventual integration into the broader Universal Union. Every incomplete floor, every partially erected spire, serves a function: anchoring dimensional energy, housing troops, or testing infrastructure that will later support full-scale suppression and occupation.

Even unfinished, the Citadels mark Earth as under observation, under control, and already partially claimed, signaling to both citizens and insurgents that resistance will be measured against an empire in relentless expansion.