In military and sports tasks, individuals are often required to perform in a complex and dynamic environment and obtain a tactical advantage over an opponent even when only partial or incomplete information is available. Successful performance in both domains is typically dependent upon the ability to work both independently and as a team in an effective manner by combining perceptual, cognitive, motor, and social skills, often under stressful circumstances. Despite these similarities, and the extensive literature bases amassed on training in each field, there has been little, if any, cross-fertilization or collaboration. We offer a synopsis of perceptual-cognitive and decision skills training research from the fields of sport psychology, expert performance, human factors, and military psychology with a view toward highlighting commonalities and differences in approach to training. Attention is drawn to the experimental designs and interventions employed, as well as methodological shortcomings and how these have been addressed. In addition, we highlight the differences in how training recommendations have been derived, discuss questions that have been raised in developing and validating training programs, and, in particular, emphasize the need for evidence-based practice. Our aim is to offer conclusions from the sport psychology literature that can inform the design, structure, content, and implementation of future military decision training.