Written as a handbook for US soldiers in overseas operations who are trying to control local resistance, it is a practical management guide.
The real interest for the general reader is how much of it applies to the current occupation of Iraq. This is a "how to" guide to dealing with insurgents, building positive relationships with local populations, strengthing the institutions of government and maintaining human rights under extreme pressure. It contains the principles against which the US army's behaviour should be judged, and by which it should judge itself.
Given the recent (August 2007) arguments in the UK about protecting interpreters, Appendix C on Linguistic Support set out in clear, practical terms how important it is that those who provide that critical service to an occupying force need and deserve protection. That part at least should be essential reading for UK government ministers.
If you are interested in Iraq and want some insight into military thinking, this is an excellent read.