ORDER OF BATTLE // November 6, 1980
Siege of Abadan
Estimated force strength by side, with confidence labels per surviving record.
Forces engaged
2 sides catalogued · combined 10,500–19,500 estimated
Iraq
4,500
Medium-confidence figure
Iran
6,000–15,000
Medium-confidence figure
Battle context
The siege of Abadan marked a significant escalation in the early phase of the Iran–Iraq War. Iraqi forces encircled the city beginning in November 1980, having subjected it to near-daily bombardment since the war opened in September. The encirclement demonstrated Iraq's operational ambition to sever and hold major Iranian urban centers, while the disparity between Iraqi and Iranian force sizes present at Abadan reflected Iran's effort to contest the city despite broader disorganization in the early war period. Iraqi casualties of roughly 1,500 against Iranian losses of approximately 3,000 indicate sustained and costly fighting within what was already a heavily damaged urban environment.
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