Operation Fath ol-Mobin

Others (including Efraim Karsh) believe it was actually the operation working in tandem with others which led to the expulsion of Iraqi troops from southern Iran.

He believes that in fact, Operation Beit ol-Moqaddas, which lasted from April to May 1982, had the greatest effect, because the Iranians were able to liberate the strategically important city of Khorramshahr.

Although they failed, Saddam was still not going to be prevented from achieving his aim of establishing complete Iraqi dominance over the Shatt al-Arab, called Arvand Rood in Iran (Persian: اروند رود) waterway.

The Iranian forces still had to contend with an Iraqi army which was entrenched on the front-line and they enjoyed a good amount of tank, artillery, and aerial support.

The Iranians had succeeded in achieving their standing aim of reversing the gains made by the Iraqi armed forces in the initial stages of the Iran-Iraq War.