Reddit reviews Compulsion in Religion: Saddam Hussein, Islam, and the Roots of Insurgencies in Iraq

Faith Campaign was not pro-Salafism, really. During the same time as the Campaign, Saddam denounced Wahhabism and killed/imprisoned Salafis who went too far in stirring up Sunni-Shiite hatred. Some good readings on this:

A Pedigree of Terror: The Myth of the Ba’athist Influence in the Islamic State Movement. It demonstrates that a lot of the alleged connections between Saddamist officers and Daesh are overblown or simply false. It also details the background of Daesh's top leaders; many of them (including Baghdadi himself) openly denounced and condemned Baathism and Saddam

Compulsion in Religion: Saddam Hussein, Islam, and the Roots of Insurgencies in Iraq. A full book on the topic, and goes beyond the public face of the Faith Campaign to the inner workings of Saddam's government