Wall is a Creon unit in The Iron Plague, expansion pack of the real-time strategy franchise, Total Annihilation: Kingdoms.


From the handbook (Page 11):

Built by Sage and Mechanic.
Fixed Structure - No Weapons.

Sometimes a remarkably low-tech structure is the best way to slow oncoming hordes. The defensive walls of Creon are of sturdy construction. They're comprised of a lattice of iron reinforced with stone and mortar.