Maybe something a bit broader like "Clever Fortifications" or "Technical Defences" to cover any sort of interesting and carefully designed defensive structure. So it might be a star fort map, that actually shows the overlapping fields of fire of the gun emplacements, but it might also be a Pre-gunpowder castle that shows all the defensive structures like an angled entry causeway to restrict the use of battering rams or nested escalating walls that can attack the walls outside themselves but not those inside. Anything that relies on the design of the structure rather than "extra" features like shield generators or magic, or the size of its garrison, or the like (though they can be added too).