The commander of the Royal Netherlands Airbase Volkel has commissioned a study to obtain a clear insight into the process of command and control (C2), with the objective of assuring the quality of the output of C2. To enable this goal, TNO HF developed a generic assessment tool for evaluating the performance of C2 teams: the Command & Control Process Measurement Tool (C2PMT). The C2PMT comprises concrete and clearly observable performance indicators on the basis of which the process of C2 teams can be assessed. These specific performance indicators are based on interviews with key commanders of Airbase Volkel, and on a review of the relevant literature. A prototype of the C2PMT was successfully tested during a three-day exercise. In this paper, the development of the C2PMT will be described. First, the problems and questions of the Airbase will be presented. Secondly, team performance and performance indicators, as identified by the literature and field studies that have been conducted, will be commented upon. Thirdly, the development and prototyping of the C2PMT will be discussed. The final section concludes with future research and development issues.