Structural Terrain defines man-made environmental features within the Play Area that provide specialized mechanical interactions based on Unit Type classifications. Units possessing the Vehicle Unit Type treat these features as Blocking Terrain, resulting in an absolute prohibition on movement through the footprint and the establishment of Line Of Sight Traces. Units categorized as Infantry treat Structural Terrain as Area Terrain, authorizing these Units to occupy the interior of the feature. Units positioned inside the boundary receive the Cover status, representing the protection offered by reinforced walls and partitions.
- Units possessing the Vehicle Unit Type are strictly prohibited from entering or concluding any movement within the footprint of Structural Terrain. For these units, the boundary acts as Impassable Terrain.
- Units categorized as Infantry treat Structural Terrain as Area Terrain for movement, and cover authorizing these Units to occupy the interior of the feature. Exactly one Unit is authorized to occupy a single Structural Terrain feature at any time.
- A Unit is eligible to receive the Cover status only if all of the physical Unit Bases are positioned entirely within the structural terrain perimeter.
- Close Combat with defenders occupying a structure is initiated when an Attacker establishes physical Base Contact with any portion of the structural footprint.
- Only Infantry Units may initiate a Close Combat against units within Structural terrain. At the resolution end of the close combat, the loser must vacate the terrain and the winner may choose to garrison the building.