The Incursion War (also known as Tiberium Control Network Conflict or TCN Conflict) was fought between GDI and anti-Kane Nod Separatists in the period between the Third and Fourth Tiberium Wars. The main point of conflict was the far-flung Tiberium Control Network (TCN) that was under construction. The binary pressures of defending the TCN and pursuing the Separatists prompted GDI to reorganize into three branches: Offense, Defense, and Support. This was made possible by the introduction of the Crawler MCV, the next generation MCV. Within a year of the reorganization, GDI defeated the rebels.