The U.S. military said those killed in a joint assault by U.S. and Iraqi forces last month included the group’s top commander in Iraq and its leading bomb maker.

Last month’s raid In Iraq’s western Anbar Province resulted in the death of four top ISIS commanders, U.S. Central Command announced. The Aug. 29 mission, one of the biggest raids carried out under Operation Inherent Resolve, took out the terror group’s top commander in Iraq and 13 other fighters, and left seven American servicemembers injured.

American leaders should reject any form of mission creep in the Middle East – including state building and countering Iranian influence in Iraq.

Four ISIS leaders were killed as a result of raid in western Iraq late last month, the US military said Friday.

A top Isis commander tipped to become the group’s new global leader was killed in one of the largest US counter-terror operations in years.

Four ISIS leaders were killed as part of a U.S.-Iraqi raid in Western Iraq on Aug. 29 that killed 14 operatives, the U.S. military said on Friday. The U.S. disclosed the operation in August; it also injured seven military personnel.

The four leaders killed were identified as Ahmad al-Ithawi, the operations leader for ISIS in Iraq; Abu Hammam, who oversaw operations in western Iraq; Abu Ali al-Tunisi, who managed technical development; and Shakir al-Issawi, who led the group’s military operations in western Iraq, according to Centcom.