Command and Control Warfare (C2W) is a complex area which becomes increasingly important and complicated due to the rapid technological development. To visualise the effects of C2W on another party's ability to practice command and control, a C2W demonstrator is under development, which is now ready in a first version. The current report describes the second user test performed in the demonstrator environment with users outside the development team. Four test subjects formed two teams, playing opposite forces in the scenario, an international rapid deployment force and an irregular local force. Both forces had a number of electronic warfare (EW) and computer network operations (CNO) actions at their disposal. The collection of human factors data aimed to test if and how C2 ability can be measured and identify development needs for future versions of the demonstrator. Results show that the demonstrator environment is useful for visualising the effects of how C2W can affect C2 ability. A number of development needs were identified which will be taken care of in future versions of the demonstrator.