The First Expeditionary Force was a division among the Global Defense Initiative's army. Since Assault Platoon Epsilon was fighting Scrin forces in Germany and Switzerland, this army division was in charge of a primary operation in Italy at its capital city of Rome. One of the notable soldiers working with them was Sergeant Major E.H. Jarvis. The division was in Rome to destroy a Scrin Tower with GDI's Ion Cannon and led by its famed GDI Commander (Tiberium Wars).