Underlit crystals in sand represent an alien world held by Taurian Concordat mechs: a Lineholder, Emperor, and Merlin.
Tactical Operations is the one-source reference for advanced rules that apply to on-world operations. It includes new movement and combat options, an extensive Advanced Weapons and Equipment section, and the rules for playing and constructing advanced Support Vehicles and Mobile Structures. The pictures below are from Tactical Operations
Out Of Print