Underground fortifications have been a cornerstone of defensive strategy for many centuries. On the war-torn Cradle Worlds and the United Colonies they are extremely common, especially in densely developed or militarised urban areas.
Often, only a few entrances betray the presence of massive subterranean structures at least as developed as the skyscrapers visible on the surface. This particular structure, the M116 Standard Bunker Entrance, is the most common visible element of underground military instillations across the Colonies and Cradle Worlds. Its design has changed little over the years due to its effectiveness, low cost and prodigious toughness. Indeed, the M116 is rated to survive the blast wave of a 10 Megaton nuclear detonation.
The M116 is also equipped with an integrated missile defence system, allowing occupying troops to fire upon aggressors without putting themselves in harm's way. In most situations, the only effective ways to eliminate dug in troops is to somehow get your own troops inside, where a vicious close quarter battle is certain to erupt!
Experimental Scenarios for the Bunker Complex are available from the downloads tab above