The Human Terrain System (HTS) was an important subject at Ethnography.com when the military began funding it in 2006-2007 or so. The program was established to bring anthropological understandings of culture into the US military in Afghanistan and Iraq.
There was a great deal of controversy in the AAA, and those of us at Ethnography.com at the time responded about the strengths and weaknesses of the program, as well as whether AAA’s approach.
HTS though is now over and done with, though. Roberto Gonzalez is a long-time critic of the program, and details its rise and fall here. (There is an excellent bibliography at the end of his article for any ambitious students interested in the rise and fall of the program!