Last preachy post on this subject:
So, why does it matter? Well, Iraq has been involved in three wars in recent time that are significant.
We engaged them in the 1991 Gulf War. Even though this was a truly lopsided result, we do not have good two-sided data available for this war (it may exist, but it is classified/closed). As this was our largest conventional operation since the Korean War (1950-1953), then having good two-sided data for this war would be useful. As it is, the last major conventional fight that the U.S. participated in where there is good two-sided data is in Italy through June 1944. After that, German records significantly degrade and we do not have a good collection of opposing force data for Korea, Vietnam or Iraq….although we do have it for Grenada ;).
Then we invaded and conquered Iraq in 2003. This was effectively a three-division operation that went extremely well also. As this was the last major conventional operation we conducted, it would be useful to have good data for the opposing side (hopefully we do, but again, it is classified/closed).
But, probably most significant is the Iran-Iraq War from 1980-1988. This was the largest conventional war since the early 1970s (India-Pakistan in 1971 and the Arab-Israeli War of 1973). This was also the first major war that used chemical weapons since World War I (1914-1918). Chemical weapons and nerve agents were used extensively by Iraq against the Iranians, and also brutally against Kurdish civilians. Iran did make limited used of chemical weapons in response. It is also the only extensive use of nerve agents in warfare. This is probably important to understand and analyze. We do not have records from the Iranian side, so it would be nice to have records from the Iraqi side. Hard to analyze their operations if we have records from neither side. We really have no actual operational data on the effects of chemical weapons in combat since 1918, and we have no operational data on the effects of nerve agents in combat. This could be a major shortfall.
Now, the documents destroyed, according to the article we originally cited, was only the material captured during the 1991 Gulf War, with records dating back to 1978.  Some of it (at least 60%) was preserved on digital tapes. And, perhaps we have preserved all the military records we captured in 2003. So, in fact there may be an extensive collection available (at least 725,000 pages), although it is classified or closed to researchers. Based upon our track record of record preservation from Vietnam and onward, I have reason to be concerned.
Anyhow, a related link on our chemical warfare studies (including links to articles on the Iran-Iraq War):
P.S. There are over a dozen counties in the world that still have chemical warfare arsenals, including Syria, Iran and North Korea.
