Weapons factory (Renegade)

The weapons factory was pioneered by GDI scientists during the First Tiberium War. During that Conflict, Nod used an airfield for their vehicular needs.

Description
Basically, a War factory consisted of a central open area where actual manufacturing of the unit would take place, a collection of robot welding arms, a smelter, and various other small processes related to the manufacturing of parts for the assembly of units. This was the case during both the First Tiberium War and the Second Tiberium War. Later, during the Firestorm Crisis, the War Factory was turned into a mobile, although extremely slow, unit.

First Tiberium War
During the First Tiberium War, GDI used war factories to produce their units, and benefitted from having the unit produced on the spot. As soon as it was built, it could be used on the battlefield, while Nod commanders had to wait for the unit to be flown in. It was possible for astute GDI commanders to trace NOD bases through the use of Cargo Plane flyovers.

Second Tiberium War
Realizing the benefits of the on-site approach, and realizing that most weapons manufacturers had been either absorbed by GDI or had joined Nod directly, Nod switched to using war factories as well, and managed to steal the specifications of manufacturing equipment to produce a nearly identical copy of GDI's War Factory.