Concrete walls

Concrete walls were reasonable effective, yet somewhat expensive barriers used to keep enemies out of bases. They were the only defense able to hold back tracked tanks. Although, eccesive use of explosive weapons would eventualy break down the barrier.

The concrete walls of the Great World War II and First Tiberium War were simple straight walls. Due to improvements in explosives the walls of the Second Tiberium War were redesigned to have wider sections and be better mounted into the earth.