ISG meaning in Military and Defence ?

The Iraq Survey Group (ISG) was a fact-finding mission sent by the multinational force in Iraq to find the weapons of mass destruction alleged to be possessed by Iraq that had been the main ostensible reason for the invasion in 2003. Its final report, Comprehensive Report of the Special Advisor to the Director of Central Intelligence on Iraq WMD (commonly referred to as the Duelfer Report, named after the head of the ISG Charles A. Duelfer), was submitted to Congress and the president in 2004. It consisted of a 1,400-member international team organized by the Pentagon and Central Intelligence Agency to hunt for the alleged stockpiles of weapons of mass destruction, including chemical and biological agents, and any supporting research programs and infrastructure that could be used to develop WMD. The report acknowledged that only small stockpiles of chemical WMDs were found, the numbers being inadequate to pose a militarily significant threat.