In autumn 1989, the main CENTCOM contingency plan, OPLAN 1002-88, assumed a Soviet attack through Iran to the Persian Gulf. The plan called for five-and-two-thirds US divisions to deploy, mostly light and heavy forces at something less than full strength (apportioned to it by the Joint Strategic Capability Plan [JSCAP]). The original plan called for these five-and-two-thirds divisions to march from the Persian Gulf to the Zagros Mountains and prevent the Soviet Ground Forces (army) from seizing the Iranian oil fields.[4]