The command and control warfare simulator (LKS) is a demonstrator with the purpose to study the effects of command and control warfare on command and control ability. The current study aimed to test technology and methods of version 5 of the demonstrator and study how command and control ability can be assessed. Data collection was based on a hypothesis of ten prerequisites for command and control, which is assumed to describe command and control ability. Command and control ability is in the LKS project restricted to electronic warfare (EW) and computer and network operations (CNO). A pilot experiment (experiment 8) was conducted, followed by two identical main experiments (9 and 10). Participants were experts on electronic warfare and computer and network operations, forming a staff. The opponent side and higher chief in command were played by the game control. Each experiment consisted of one day education and training, and two days of gaming. Data collection contained an objective performance measure, self estimations, observers' estimations, system logs, video and screen shots. The results from self estimations show that the 10 prerequisites for command and control predict command and control ability. A LISREL model was created, where the prerequisites for command and control was divided into four factors with causal connections. For the first time, it was now possible to visualize how the ten prerequisites relate to each other. The experiment resulted in several experiences for the next phase of LKS where it will be a part of FM transfer program for demonstrators.