BIO
LTC Diehl originally enlisted in the Regular Army in 1984. Prior to retirement, his service included tours in Germany at Field Station Augsburg (1986-1989), in Iraq at Forward Operating Bases Danger and Speicher (2005) and at the Pentagon with the International and Operational Law Division of the Office of the Judge Advocate General and the Operations Directorate of the Office of the Deputy Chief of Staff G-3/5/7, Headquarters, Department of the Army (2010-2014).