Michael Yon's latest is another must read - Empty Jars:
...There is a pattern of cascades in counterguerrilla combat operations. In this kind of warfare, information drives maneuvers, and a single capture of a key person frequently cascades into a shower of raids and captures, each pregnant with the next storm.
That night, Iraqi police took the 4 captured men out to identify targets. On route, one "tried to escape" and was killed, intensifying the pressure on the remaining three. The cascade had begun with the snippet of information, but now was fanning open, as police, operating alone, uncovered the original cache in the village northwest of Mosul. While this catch was merely a depot to Mosul, it led to the giant cache we raided ["The Devil's Foyer," 21 July 05], and from there to yet another large cache uncovered on the same day on the east side of the Tigris River in Mosul. The cascade fizzled to the end of its run at a fourth cache that rendered only empty munitions containers.
Of greater interest was the prisoners' admission that the munitions were being readied for the next elections...