Bolger, Dan. The Battle for Hunger Hill
Randi, James. The Faith Healers
Randi, James. Flim-Flam!
Bolger's book is a description of what happened when the battilion he commands went to the Joint Readiness Training Center to experience combat against the kind of guerillas they might meet in the numerous 'police actions' and 'military interventions' that the US participate in (Bolger got totally creamed), and a more organized but still seriously skilled army like the one that we didn't meet in Iraq (Bolger barely won).
Randi is a professional magician who's also one of the founding members of the Committe for the Scientific Investigation of Claims of the Paranormal (CSICOP), and his books are very fascinating analyses of such things - Faith Healers deals with just that, faith healing, and Flim-flam! is a general analysis of stuff like UFOs, the Bermuda Triangle, psychics, astrology.