Special Agent
Special Agent assigned to an MTOE criminal investigative unit in support of 3ID and the Maneuver Center of Excellence; preserves readiness of the force through expert felony criminal investigations; conducts interviews and interrogations; processes crime scenes; employs and trains on technical investigative equipment; identifies, preserves, collects, and utilizes physical, digital, and testimonial evidence; prepares written technical reports and provides testimony at hearings, boards, and courts martials to support Commanders in their efforts to improve their formations; maintains liaison with installation, local, and federal law enforcement officials; on order, deploys in support of contingency operations worldwide providing expert criminal investigative capabilities to the U.S. Army and joint commanders.
Detachment Sergeant
Investigates felony criminal offenses with an Army interest; evaluates, processes, and photographs crime scenes; collects and analyzes physical and digital evidence; interviews and interrogates victims, witnesses, suspects, and subjects; conducts crime prevention and analytical surveys; prepares reports to document the results of investigations and surveys; testifies in courts-martial proceedings and before federal, state, and local tribunals; conducts coordination and liaison with Staff Judge Advocates and civilian attorneys, serves as the senior enlisted advisor to the Special Agent in Charge, responsible for the accountability of $150,000 of government equipment.
MOS 31D - CID Special Agent
Major Duties. The CID Special Agent supervises or conducts investigations of incidents and offenses or allegations of criminality affecting DA or DoD personnel, property, facilities, or activities. Duties for MOS 31D at each level of skill are:
MOSC 31D20. Conducts independent felony-level criminal investigations of general crimes (property and persons), economic crimes, and counter-drug operations, to support post, camp, and station commanders around the world; processes crime scenes, collects evidence, and conducts interviews or interrogations of complainants, victims, witnesses, and subjects; performs Protective Services operations.
MOSC 31D30. Conducts independent felony-level criminal investigations of general crimes (property and persons), economic crimes, and counter-drug operations, to support post, camp, and station commanders around the world; processes crime scenes, collects evidence, and conducts interviews or interrogations of complainants, victims, witnesses, and subjects; preserves, safeguards, accounts for, and disposes of all evidence received in the evidence room; supports law enforcement investigations and police operations with Criminal Intelligence Analysis and Crime Analysis; performs Protective Services operations.
MOSC 31D40. Performs Detachment Sergeant duties and advises Commander/Special Agent-in-Charge on enlisted matters, investigative support requirements, and evidence management of a field investigative element supporting an Army Corps or major installation; supports law enforcement investigations and police operations with Criminal Intelligence Analysis and Crime Analysis; provides guidance and staff supervision; directs plans, procedures, and operational orders as a Detachment Sergeant in support of installation and wartime missions; conducts felony criminal investigations in support of the U.S. Army and its stallations CONUS and OCONUS; processes crime scenes; collects and preserves evidence for laboratory analysis; conducts interviews and interrogations; prepares investigative reports; briefs and coordinates with supported commanders and military and civilian prosecutors; acts as liaison with local, state, and federal law enforcement agencies; testifies at court martial and other tribunals; performs Protective Service Operations.
MOSC 31D50. Performs First Sergeant duties and advises the Battalion Commander on all enlisted matters, investigative support requirements, evidence management, Logistics Security, Criminal Intelligence, Protective Service Operations, Force Protection Operations, and Criminal Investigations such as Anti-Terrorism and War Crimes; provides guidance and staff supervision; directs plans, procedures and operational orders as a Battalion, Group, or Command level Operations Sergeant in support of installation and wartime missions.
MOSC 31D60. Advises the Battalion/Group Commander, CID Commander, or Provost Marshal General on all enlisted matters and investigative support requirements of multiple CID battalion investigative elements, supporting multiple Army major installations worldwide; provides guidance and staff supervision; directs plans, procedures, and operational orders in support of worldwide installation and wartime missions, Logistics Security, Criminal Intelligence, Protective Service Operations, Force Protection Operations, and Criminal Investigations such as Anti-Terrorism and War Crimes.

