This dissertation is simultaneously an exercise in theory testing and theory generation. Firstly, it is an empirical test of the means-oriented netwar theory, which asserts that distributed networks represent superior organizational designs for violent activists than do classic hierarchies. Secondly, this piece uses the ends-oriented theory of revolutionary terror to generate an alternative means-oriented theory of terrorist organization, which emphasizes the need of terrorist groups to centralize their operations. By focusing on the ends of terrorism, this study is able to generate a series of metrics of organizational performance against which the competing theories of organizational design can be measured. The findings show that terrorist groups that decentralize their operations continually lose ground, not only to government counter-terror and counter-insurgent campaigns, but also to rival organizations that are better able to take advantage of their respective operational environments. However, evidence also suggests that groups facing decline due to decentralization can offset their inability to perform complex tasks by emphasizing the material benefits of radical activism.