Australia (Tiberium)

Officially known as Yellow Zone Y-4, the Australian Yellow Zone was an area of strategic importance for the Brotherhood of Nod. Important areas therin included Ayer's Rock, where Kilian Qatar's headquarters was located, King's Canyon, where Ajay had a field command post, and Sydney, where a significant civilian population was being defended by GDI.

Within the Australian Yellow Zone, during the Third Tiberium War, GDI attempted to relocate its nuclear weapons from undisclosed silos in the outback to its primary bases in Sydney. However, an elite strike force from Nod's A-NZ forces (those trained in Australia and aclamated to the terrain) intercepted the GDI convoy and stoole the nuclear warheads. This occasion also marked the first important hard contact between the Scrin vangaurd and Nod forces.

In addition, Sydney was the location of the short-lived alliance between GDI and Nod against the Scrin invaders. While allied wtih GDI, Nod defended GDI assets, but also stole GDI launch codes for the nuclear weapons.