BDU's weren't and aren't Nomex. The no starch, no iron policy was to
preserve the IR suppression characteristics of the fabric. Starch allowed
the heat to pass through, and the shininess if ironed was reflective.

Les

We were told the BDUs were Nomex treated and that starch would kill it. There
were several things in writing from the base commander on down about.

Dan, U. S. Air Force, retired