Charles Hoge, MD, Colonel (retired), is a graduate of Sarah Lawrence College (BA) and University of Maryland School of Medicine (MD). He received specialty training and board certification in internal medicine, infectious diseases, and psychiatry, and served a total of 20 years in the U.S. Public Health Service (1989-1991) and U.S. Army (1991-2009). He directed psychiatry and neuroscience research at Walter Reed Army Institute of Research (WRAIR) from 2000-2009. Since 2009 he has served as a Senior Scientist at the Office of the Army Surgeon General and WRAIR, and as an attending psychiatrist at Walter Reed National Military Medical Center. He deployed to Iraq in 2004 and Afghanistan (as a civilian) in 2011. Out of his more than 200 publications, more than 40 have been published in New England J of Medicine, JAMA Network, or Lancet Network journals. His articles on PTSD and mTBI are some of the most cited medical articles from the wars in Iraq and Afghanistan, and he has testified to U.S. congressional committees on several occasions.