If you believe Wikipedia:
In April 2012, a course on Islam at the Joint Forces Staff College was suspended when it was revealed that students were being taught that all Muslims, not just terrorists, are enemies of the United States, and that it would be justified to "obliterate the Islamic holy cities of Mecca and Medina without regard for civilian deaths". The instructor, Army. Lieutenant Colonel Matthew Dooley, also taught that in the current conflict, the Geneva Conventions are "no longer relevant." The Pentagon launched an inquiry to determine whether Dooley had acted on his own initiative, or been given the approval of superiors for his course material.
(emphasis mine)