I'm actually going to kick this one up a notch and look at "compound warfare", and also "hybrid warfare"--a blending of conventional and unconventional tactics to create a new, more deadly phase of conflict, which proved quite effective in the hands of Hezbollah forces in 2006, inflicting losses on an Israeli army who first tried counterinsurgency, then conventional tactics. I'm thinking of writing a basic primer on the subject and hoping someone who is not only bright but also with access to a much larger library and free time is able to finish it.
Two articles on hybrid warfare in the past two days from Small Wars Journal:
How successful can a proper blend of orthodox and unorthodox methods be in conflict? Let's hear what Sun Tzu has to say on the topic: