CASUALTY RECORD // February 26, 1987
Siege of Basra
Estimated casualties — killed, wounded, captured, and missing — by side, with confidence labels per surviving record.
Casualties by side
2 sides catalogued · combined 50,000 estimated
Iraq
10,000
Medium-confidence figure
Iran
40,000
Medium-confidence figure
Battle context
Operation Karbala-5, the Iranian offensive aimed at capturing the Iraqi port city of Basra in early 1987, was the largest battle of the Iran–Iraq War. Iran committed between 150,000 and 200,000 troops against an Iraqi force of approximately 300,000 defenders. The assault produced extreme casualties — roughly 10,000 Iraqi and 40,000 Iranian — without Iran achieving its objective of taking Basra. The failure proved decisive for the wider war: Karbala-5 was the last major Iranian offensive of the conflict. Having expended massive manpower in a failed effort to seize Iraq's principal southern city, Iran was unable to mount a comparable strategic operation thereafter. The battle effectively marked the point at which Iranian offensive momentum in the war was exhausted.
‹ Full battle dossier