Dimensions vs. Domains – Reframing the Battlespace
For decades, military doctrine has organized warfare into five operational domains: land, sea, air, space, and cyberspace. These domains are valid for force structure, capability development, and operational planning. However, they are no longer sufficient to describe how modern conflicts unfold. Today’s battlespace is not just physical—it is dimensional.
Domains describe where warfare occurs. Dimensions describe how it unfolds.
The U.S. Army’s ADP 3-13 introduces three foundational dimensions: physical, informational, and human. These dimensions cut across all domains. A missile strike may occur in the land domain. However, its effects ripple through the informational dimension via media coverage, through the human dimension via public perception, and through the temporal dimension via escalation dynamics.
This dimensional model is more than a semantic shift—it is a strategic imperative. It allows planners to account for cross-dimensional effects, which refer to how actions in one layer propagate through others, often recursively and unpredictably.
To this foundation, we must add two more dimensions:
Temporal: Warfare is a contest for time. Duration, frequency, sequence, and opportunity shape strategic outcomes.
Electromagnetic Spectrum (EMS): EMS is the substrate through which information is transmitted, sensed, and contested. It enables cyberspace, powers communications, and underpins every non-physical dimension.
Together, these five dimensions—physical, informational, human, temporal, and EMS—form the architecture of modern conflict. They are not bounded theaters. They are overlapping fields of interaction.
Consider a cyberattack on a hospital. It is not just a technical event. It is a human trauma, an informational disruption, and a temporal manipulation. It erodes trust, delays care, and reshapes perception. It is a multidimensional maneuver.
This reframing also clarifies the role of cognition. Cognition is not a separate domain; it is the connective tissue across dimensions. It is where meaning is made, decisions are formed, and trust is either built or broken. It is, and always has been, the true target of operations, actions, activities, and desired effects—the opposition's perceptions.
We are already well into the next war - whatever we will come to call it.
Chief Growth Officer at Systems Planning and Analysis, Inc
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