The Department of Defense datafile on 2/19th Special Weapons Group, partially declassified and unredacted. (Additional Information on the unit that "The Damned of the 2/19th" centers around)
A lexicon of terms in a separate file for those confused or uncertain of the military terms in the Damned of the 2/19th series. I put this in a separate file so that someone reading one of the books could have this document open while reading one of the books so that they don't have to close the book.