Eric Rosenbach  Eric Brien Rosenbach is an American public servant and retired U.S. Army Captain who served as Pentagon Chief of Staff from July 2015 to January 2017 and as Assistant Secretary of Defense for Homeland Defense and Global Security from September 2014 to September 2015. As Chief of Staff, Rosenbach assisted Secretary Ash Carter on the Department of Defense's major challenges of the time, which included increased Russian aggression, the Syrian Civil War, and North Korean missile tests. Rosenbach received his B.A. in Political Science in 1995 from Davidson College where he participated in the Army Reserve Officers’ Training Corps (ROTC, AROTC) program. He received a Masters in Public Policy from the Harvard Kennedy School of Government in 2004 and a Juris Doctor from Georgetown University Law Center in 2007. He was a Fulbright Scholar 1995 - 1996. Rosenbach's background is in cybersecurity, both public and private sector. Most recently, he acted as the DoD ‘cyber tzar’; from September 2011 to August 2014, he served as the Deputy Assistant Secretary of Defense for Cyber, in which role he oversaw and led the DoD's cybersecurity strategy. Rosenbach continued to oversee cybersecurity as Chief of Staff. From 2000 to 2002 he advised Tiscali, the then-largest Internet service provider in Europe, on cybersecurity as their Chief Security Officer, and prior to that, he was an Army intelligence communications officer. Returning to Harvard Kennedy School to teach in 2007, Rosenbach was the Executive Director of the Belfer Center for Science and International Affairs for three years before going to the DoD. He would again return to Harvard in May 2017 to become Co-Director of the Belfer Center with Secretary Ash Carter. Eric Rosenbach was born at the US Air Force Academy in Colorado. His father, Dr. William E. Rosenbach, a thirty-year Air Force Veteran, served in the U.S. Air Force flying a Lockheed C-130 Hercules in the Vietnam War. A professor at the academy, Dr. Rosenbach was an influential force in Eric Rosenbach's decision to join the military through the ROTC program. Rosenbach attended the Gettysburg Public High School where he played football, basketball, and lacrosse. On a ROTC scholarship at Davidson, Rosenbach was elected student body president, played quarterback for the Davidson football team, and was a ROTC battalion commander. Rosenbach got involved in Davidson's Dean Rusk International Studies Program and found public service appealing.