text: FM 2-22.3
  Chapter 2
  Human Intelligence Structure
  ORGANIZATION AND STRUCTURE
  2-1. The success of the HUMINT collection effort depends on a complex
  interrelationship between command and control (C2) elements,
  requirements, technical control and support, and collection assets. Each
  echelon of command has its supporting HUMINT elements although no MI
  organization in the Army is robust enough to conduct sustained HUMINT
  operations under all operational environments using only its organic
  HUMINT assets. HUMINT units have specific support requirements to the
  commander. HUMINT units must be flexible, versatile, and prepared to
  conduct HUMINT collection and analysis operations in support of any
  echelon of command. A coherent C2 structure within these HUMINT
  organizations is necessary in order to ensure successful, disciplined, and
  legal HUMINT operations. This structure must include experienced
  commissioned officers, warrant officers, and senior NCOs conscientiously
  discharging their responsibilities and providing HUMINT collectors with
  guidance from higher headquarters.
  2-2. Regardless of the echelon, there are four basic elements that work
  together to provide the deployed commander with well-focused, thoroughly
  planned HUMINT support. The four elements are staff support, analysis, C2,
  and collection. Each piece of the infrastructure builds on the next and is
  based on the size, complexity, and type of operation as shown in Figure 2-1.
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  Figure 2-1. Tactical HUMINT Organization.