A statistical study is reported of 17,726 wounded American soldiers in Viet Nam over 15 months from March 1966 to July 1967. Causes, location, treatment, and results were analyzed for various regions, organs, and tissues. Results of treatment were remarkably good, the best in the history of military surgery. Major problems of resuscitation and treatment of local tissue injury which had not before been treated on a large scale were treated with excellent results.