Historically, many lessons learned from military combat casualty care have found application in civilian trauma care. This has also been true of TCCC. The US has just had the longest period of continuous armed conflict in its history create a unique opportunity to study and improve battlefield trauma care. Over two decades of caring for combat casualties, many advances have been incorporated into TCCC as new evidence, new technology, and ongoing battlefield experience have accumulated. Due to the numerous reports noted above that have highlighted the success of TCCC, is now used well beyond the confines of the U,S. military.