“Occupation Forces” can refer to military forces that occupy a territory, or it can be a specific mission in the video game Metal Gear Solid 5: The Phantom Pain. In the context of military occupation, it signifies a ruling power’s temporary control over a sovereign territory outside its own boundaries. In Metal Gear Solid 5, “Occupation Forces” is Mission 8, which involves eliminating a colonel, tanks, and potentially rescuing a prisoner.