Criminal Investigation Fundamentals and Investigative Process
Criminal Investigation Fundamentals and Investigative Process
The exam tests how a CID special agent moves a case from notification to disposition: jurisdiction, preliminary investigation, investigative planning, case review, and referral. Expect questions on the difference between military police first response and CID follow-up, solvability factors, and the reporting chain to command and trial counsel.
Authority and case acceptance
CID investigates felony and sensitive offenses under Army Regulation 195-2 and DoD policy. Commanders retain UCMJ authority; CID does not impose discipline. Case acceptance turns on offense type, subject status, and whether the matter is criminal, command, or medical. The agent documents notification, obtains a synopsis, and decides whether CID has primary jurisdiction or supports another agency.
The investigative process
A workable sequence is initial notification and response; preliminary investigation with scene protection, initial interviews, and evidence preservation; case opening and assignment; investigative plan; follow-up; case review; disposition; after-action review. The plan states the theory, the elements to prove, the evidence needed for each element, tasks, and deadlines. It is a living document, not a formality.
Solvability and linkage
Common solvability factors include a named suspect, suspect description, vehicle, physical evidence, identifiable fingerprints or DNA, a cooperative witness, and a recognizable modus operandi. Linkage analysis compares offense characteristics across cases and supports, but does not prove, a common offender. Negative findings are evidence and must be documented.
Worked example
A barracks room is burglarized. Military police secure the room and call CID. The agent notes the point of entry, photographs it, interviews the occupant, and learns a roommate's friend was seen leaving with a duffel bag. The plan lists elements: unlawful entry, intent to commit larceny, and taking. Tasks include canvass, consent search of the friend's room, pawn checks, and a lineup only after independent identification. The agent does not promise the victim an outcome or tell the commander who is guilty.
Traps that cost marks
Assuming CID automatically owns every case. Confusing probable cause with reasonable suspicion. Writing conclusions before evidence. Skipping or never updating the investigative plan. Omitting exculpatory information. Failing to notify the commander and trial counsel at the right stage.