ANNA B. ZOGAS, then a graduate student at University of Washington, Seattle, Washington, was awarded funding in October 2013 to aid research on ''Invisible Injury:' Mild Traumatic Brain Injury and Disability Compensation in the U.S. Military Healthcare System,' supervised by Dr. Lorna A. Rhodes. The ethnographic research supported by the Dissertation Fieldwork Grant is part of a dissertation about post-9/11 military veterans' post-combat problems, with particular attention to the mild traumatic brain injury (mild TBI). Mild TBI describes a closed head injury that alters consciousness and is associated with post-injury cognitive and emotional problems. The dissertation documents and describes how combat-related mild TBI is shaped in the post-9/11 Veterans Affairs (VA) Healthcare System, and shows how combat violence and veterans' transitions out of the military are interpreted through and structured according to medical approaches to cognition and brain function. Broadly, this research provides an account of how medicine guides veterans' transition between institutions by demonstrating that in the post-9/11 VA healthcare system, cognition provides a language and a structure for military members' transitions out of war zones and into civilian society. The dissertation is based on ethnographic fieldwork conducted at a large VA medical center between September 2013 and March 2015, with funding from the Wenner-Gren Foundation supporting for twelve of those nineteen months.