Hi Jim,
To follow up on this discussion, another good publication to study guerilla and counter-guerilla warfare is the book Total Resistance by Major H. Von Dach.
Although the publication was written in the 1960s and concerns Swiss plans for dealing with a Soviet invasion, I believe it has quite a bit of information that is directly useful, or which could be easily updated, for use in today’s world. I’m not sure that the English-language version is still in print, but used copies can be found. – J.B. and Co.