“Under its leader, Iraqi jihadi Abu Bakr al-Baghdadi, the Islamic State group’s top command is dominated by former officers from Saddam’s military and intelligence agencies, according to senior Iraqi officers on the front lines of the fight against the group, as well as top intelligence officials, including the chief of a key counterterrorism intelligence unit. The experience they bring is a major reason for the group’s victories in overrunning large parts of Iraq and Syria. The officers gave IS the organization and discipline it needed to weld together jihadi fighters drawn from across the globe, integrating terror tactics like suicide bombings with military operations. They have been put in charge of intelligence-gathering, spying on the Iraqi forces as well as maintaining and upgrading weapons and trying to develop a chemical weapons program.”
Source: IS top command dominated by ex-officers in Saddam’s army