Walls were proposed barricades for Command & Conquer: Generals, just like in the other Command and Conquer games. They were removed from the game, presumably because they needlessly slowed down an otherwise fast-paced game.
There are various straight and corner pieces for walls for all factions, as well as selection pictures and tooltips. Presumably, the walls would be built using the removed line build feature, which allowed the player to build buildings along a straight line. Each faction has a specific type of wall; according to the tooltips which are left in the game, they were as follows:
- America: Laser wall section. It blocks vehicles from passing and triggers an alarm if enemy infantry tries to pass it.
- China: Traditional concrete wall, which just plainly blocks troops from progressing.
- GLA: Burning barricade. This one does not really block anything, but the fire damages the units, if they passed by.