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|Part of Iran–Iraq War, Battle of the Marshes|
|Commanders and leaders|
| Mohsen Rezaee
Mohammad Ebrahim Hemmat †
|250,000||250,000 Pasdaran and Basij|
|Casualties and losses|
|10,000 killed and wounded||40,000 killed and wounded|
After the unsuccessful major offensive named Operation Dawn V aimed directly at Basra, Iran opened a front at the lakes of the Hawizeh Marshes, in an attempt to open another venue from which Basra could be attacked. Due to sanctions Iran lacked spare parts for its American-made planes. This became a serious problem for Iran and led to heavy casualties.
On February 14, 1984, Iran fought through Iraqi defenses to the oil-rich Majnoon Island. A loss would allow Iraq to regain all territory lost in the battle. Operation Kheibar was Iran's first strategic offensive. The IRIAF could only provide an inadequate 100 combat sorties per day on average. The Iraqi Air Force had their hands full on the southern front. Because of Iran's lack of aircraft, they used helicopters to support their troops. Eventually the Iranians swept across the marshes and forced the Iraqis out of the Majnoon islands—a major disaster for Iraq. Iran now was ready to launch the final attack of the Battle of the Marshes. Iran followed up with a new offensive where 250,000 Iranian troops emerged from the marshland thrusting West and South in the direction of Al-Qurna and Basra respectively, but with the lack of air support, were very vulnerable to Iraqi mechanized forces which managed to repel this large attack. The Iraqis succeeded in containing the Iranians to the Hawizah marsh.
In the end Iran suffered an appalling 40,000 casualties in the battle of the Marshes and only inflicted 10,000 casualties on Iraq. But for Iraq even 10,000 was an unacceptable toll. After the battle, Iran tried unsuccessfully to take the Baghdad–Basra highway with Operation Badr. At the end of the War, Iraq expelled the Iranians from Majnoon island by using professional combined-arms tactics coupled with chemical weapon attacks. Some of the Iranian commanders like Hamid Bakeri and Abdul Rasul Zarrin were killed in this battle.
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