From the introduction: Close & Destroy introduced the notion of playable, realistic, modern combat miniatures game. Close & Destroy II picks up where C&D left off. We have tried to produce a set of rules which covered tactical air and air defense and which could be added to C&D without changing what works. "If it aint't broke, don't fix it." These rules are the result of our effort. As with C&D, they do not cover every conceivable situation and every possible detail. They are designed to reflect the actual conditions on the modern battlefied, or at least as close as we can figure it. To be used together with Close and Destroy. Expands: Close and Destroy