Two days later, Iran began to carry out their main offensive against Abadan.
During the night, the Iranians infiltrated a force of 20,000–30,000 troops across the Bahmanshir River towards the Iraqi forces on the east bank of the Karun River around Abadan.
The Iraqis failed to carry out adequate reconnaissance to discover the infiltration.
The main attack was preceded by the Iranian air force carrying out airstrikes against the Iraqi troops between the Bahmanshir and the east bank of the Karun.
Due to Iranian air superiority, the Iranians drove the counterattacking Iraqi jets away.
On September 26, the Iranians ground forces attacked.
The Iraqis were pinned down in their strongest positions, while their weakest positions were torn through, resulting in the isolation of many Iraqi forces.
Iraq failed to maneuver their forces against the Iranians, and they stood in their static positions.
An Iranian armored battalion cut the enemy forces in two, while AH-1 Cobra helicopters destroyed numerous Iraqi tanks using TOW missiles.
Meanwhile, the siege of Abadan was broken, yet many Iraqi forces remained on the east bank of the Karun River, prevented from retreating after the Iranian air force bombed the bridges across the Karun River.

The next phase of the battle came when the Iranians unleashed their 92nd Armored Division on the north side of the Iraqi positions on September 27.
The Iraqi command had been driven into a panic and attempted a tactical withdrawal, which turned into a rout.
The Iraqis abandoned their heavy weaponry, and fled across the river on a makeshift pontoon bridge and rafts.
Two days later, Iran began to carry out their main offensive against Abadan. During the night, the Iranians infiltrated a force of 20,000–30,000 troops across the Bahmanshir River towards the Iraqi forces on the east bank of the Karun River around Abadan. The Iraqis failed to carry out adequate reconnaissance to discover the infiltration. The main attack was preceded by the Iranian air force carrying out airstrikes against the Iraqi troops between the Bahmanshir and the east bank of the Karun. Due to Iranian air superiority, the Iranians drove the counterattacking Iraqi jets away. On September 26, the Iranians ground forces attacked. The Iraqis were pinned down in their strongest positions, while their weakest positions were torn through, resulting in the isolation of many Iraqi forces. Iraq failed to maneuver their forces against the Iranians, and they stood in their static positions. An Iranian armored battalion cut the enemy forces in two, while AH-1 Cobra helicopters destroyed numerous Iraqi tanks using TOW missiles. Meanwhile, the siege of Abadan was broken, yet many Iraqi forces remained on the east bank of the Karun River, prevented from retreating after the Iranian air force bombed the bridges across the Karun River.
The next phase of the battle came when the Iranians unleashed their 92nd Armored Division on the north side of the Iraqi positions on September 27. The Iraqi command had been driven into a panic and attempted a tactical withdrawal, which turned into a rout. The Iraqis abandoned their heavy weaponry, and fled across the river on a makeshift pontoon bridge and rafts.
Operation Samen-ol-A'emeh