32 C.F.R. § 635.20 Military Police Codes (MPC).
Title 32 - National Defense
(a) MPCs identify individual provost marshal offices. The Director, USACRC will assign MPCs to provost marshal offices. (b) Requests for assignment of a MPC will be included in the planning phase of military operations, exercises, or missions when law enforcement operations are anticipated. The request for a MPC will be submitted as soon as circumstances permit, without jeopardizing the military operation to HQDA, Office of the Provost Marshal General (DAPM–MPD–LE). Consistent with security precautions, MACOMs will immediately inform HQDA, Office of the Provost Marshal General (DAPM–MPD–LE) when assigned or attached military police units are notified for mobilization, relocation, activation, or inactivation. (c) When a military police unit is alerted for deployment to a location not in an existing provost marshal's operational area, the receiving MACOM or combatant commander will request assignment of an MPC number from HQDA, Office of the Provost Marshal General (DAPM–MPD–LE) providing the area of operations does not have an existing MPC number. The receiving MACOM or Unified Combatant Commander is further responsible for establishing an operational COPS system for the deployment.
Title 32: National Defense
PART 635—LAW ENFORCEMENT REPORTING
Subpart C—Offense Reporting
§ 635.20 Military Police Codes (MPC).

