The Colonial Defense Forces is the first active, fan driven, chapter based Battlestar Galactica fan club. The CDF is devoted to uniting Battlestar Galactica fans worldwide. We want to make sure your experience as a Battlestar Galactica fan is as complete as possible. Command or serve on a Battlestar. Pilot a Viper. Be one of the few, the proud, the Colonial Marines. Run for a Colonial Government position as a civilian. Be a part of the action!