The next day, Iraq launched a ground invasion along a front measuring 644 km (400 mi) in three simultaneous attacks. The invasion's purpose, according to Saddam, was to blunt the edge of Khomeini's movement and to thwart his attempts to export his Islamic revolution to Iraq and the Persian Gulf states.
On 22 September 1980, when Saddam Hussein launched an invasion of Iran, setting off the Iran–Iraq War (1980–1988), Soleimani joined the battlefield serving as the leader of a military company, consisting of men from Kerman whom he assembled and trained.