Background. In recent years, major changes occurred in the nature of military conflicts. Those changes defined a need for the development of new combat vehicles that are smaller, faster, more lethal and more survivable. Such vehicles should be able to achieve the same operational goals with lower costs in equipment and personnel. Goal. The Future Combat Vehicle (FCV) program contains the development of a lighter armored vehicle that will be operated by two operators, a commander and a warrior. Operators will be seated side-by-side in the hull with closed hatches. They will perceive the Surrounding environment through various electronic devices, and control the vehicle with integrated, hands-on controls. This new concept raises challenges for designers, especially in two domains: (1) maintaining the required level of combat task performance despite reducing team size from four to two warriors, and (2) maintaining situation awareness while operating from a closed vehicle without any direct view of the outside world. Method. The vehicle design process included various technical, operational and human factors aspects, including (a) operational concept, (b) technical design, (c) maintenance approach, (d) specifying Tactics, Techniques, and Procedures (TTPs), and (e) task analysis and user interface design for the experimental phases. The IDF ARMY BattleLab conceptualized the operating concept, proposed TTPs and various technologies that should support the two operators of the vehicle. Two experiments were performed. In the first experiment each vehicle operated independently, whereas, in the second they operated as a two-vehicle platoon. Results. Initial results show that the new operating concept enabled the reduction of team size without negatively impacting overall performance in a single vehicle; however, some decrease was found in operators' situation awareness and performance when the tank commander had to command a platoon from FCV as compared to a traditional tank.