This is the second episode in the series of “Case Records of the Joint Trauma System (JTS). Modern battlefield trauma care is characterized by highly complex and multi-system injury patterns, severe injuries, and care delivered in an austere and resource-constrained environment. This results in fertile ground for challenging management decisions, adverse events, suboptimal outcomes, and even preventable deaths. This episode was recorded during a session at the 2017 EAST Annual Scientific Assembly that consisted of a moderated discussion of 3 cases from the conflicts in Iraq and Afghanistan that resulted in a potentially preventable death, or major adverse outcome. The cases were presented in a standard M&M conference format, with open audience discussion throughout regarding key management decisions and options, and suggestions for preventing or minimizing the adverse events. There were 4 cases presented, emphasizing every phase of battlefield care, from pre-hospital thru to medical evacuation back to the United States.Supplemental Materials:Link to full video of the session on the EAST YouTube Channel.