[2] Ahead of Operation Dawn-4, units of the 1st Corps spent two months in their trenches waiting for the Iranians to attack.

The offensive came on 19 October 1983 as the Iranians and Peshmerga guerrillas of the Patriotic Union of Kurdistan took 250 square miles (650 km2) of territory.

From there the brigade moved on to Sirsenk where it occupied a vital airstrip.."[5] Before the U.S. invasion of Iraq, it had its headquarters in Kirkuk, and was orientated to the north, facing the Kurds.

The successful occupation of Kirkuk came as a result of approximately two weeks of fighting that included the Battle of the Green Line (the unofficial border of the Kurdish autonomous zone) and the subsequent Battle of Kani Domlan Ridge (the ridgeline running northwest to southeast of Kirkuk), the latter fought exclusively by 3rd Battalion, 10th SFG and Kurdish peshmerga against the 1st Corps.

[9] Remnants of the corps lasted until the dissolution of the Iraqi Army by Coalition Provisional Authority Order 2 in May 2003.