RTS faction of the time

Command & Conquer Tiberian Series

1. Global Defense Initiative
2. Brotherhood of Nod
3. Scrin

Command & Conquer Red Alert Series

1. Allies Forces
2. Soviet Union
3. Empire of The Rising Sun

Command & Conquer Generals Series

1. United States of America
2. China
3. Global Liberation Army

Dune Series

1. The noble Atreides
2. The evil Harkonnen
3. The insidious Ordos

Warcraft Series

1. Human Alliance
2. Orcish Horde
3. Undead Scourge
4. Night Elf Sentinel

Starcraft Series

1. Terran
2. Zerg
3. Protoss