Since 2004, the Department of Defense (DOD) has been using forensic science tools on the battlefield. Traditional law enforcement techniques are being used to attack improvised explosive device (IED) networks; gather intelligence; strengthen force protection; and identify and prosecute terrorists, criminals, and other adversaries. It is the same forensic science practiced throughout the United States and the world each day. The one significant difference is that the tools are being applied in an expeditionary environment: on the battlefield.