The U.S. Army's Future Combat Systems (FCS) include a host of advanced technologies designed to enable our forces to see first, understand first, act first, and finish decisively. The new technologies range from weapons and sensor platforms to networked communication and collaboration tools in support of battle command. To support Soldiers and leaders who will utilize these advanced tools and technologies in combat, it is critical to prepare them to successfully leverage the new systems to accomplish mission goals. It has been suggested by senior Army leaders that the cognitive requirements of the FCS environment may be distinct from those of the current force environment. Therefore, training must address the distinct set of FCS thinking skills and cognitive requirements. We conducted a limited cognitive task analysis (CTA) in the envisioned FCS world to identify FCS cognitive requirements. We then conducted a content validation to determine the validity of the cognitive requirements produced by the CTA and identified the following eight FCS cognitive themes: 1) Employ FCS Capabilities, 2) Develop Intelligence, 3) Make Sense of Information, 4) Perform Predictive Analysis, 5) Share Situational Understanding, 6) Demonstrate Individual Initiative, 7) Sustain Unit Operations, and 8) Plan Continuously. We then applied the tenets of the Adaptive Thinking Training Methodology in conjunction with the content of the eight FCS cognitive themes to guide the development of five exemplar multimedia training vignettes. The vignettes target FCS cognitive skills for a battalion commander, battalion staff, company commander, and platoon leader. We designed them to be embedded in FCS training systems. Because of the dynamic nature of cognitive requirements within the FCS environment, we suggest our qualitative research has produced a set of robust cognitive themes that will guide future research in the development of embedded adaptive thinking training for FCS Soldiers and leaders.