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Command Network Module

From Halopedia, the Halo wiki

A Military Police helmet equipped with the CNM highlighted.

The Command Network Module or CNM, is a communication device utilized by the United Nations Space Command, commonly adopted as an external helmet attachment.[1]


The Command Network Module allows users to communicate and synchronize with the UNSC battle network in real-time.[2] Different CNM variants has been observed across branches and ranks within the UNSC, including UNSC Army troopers, Orbital Drop Shock Troopers, and Spartans.[3]


The CNM has been observed to be compatible with the following helmets:

Variants and configurations[edit]

During the Human-Covenant War, the CNM has three observed variants, each with its own distinct physical appearances. The first variant is the ODST-CNM, which is exclusively employed on ODST armors. The other two variants are standard issue to UNSC Special Forces unit commanders,[8] and both variants could be upgraded to the Command Network Module-Improved (CNM-I) variant on the HAZOP and Air Assault variants of MJOLNIR Mark V.[10][5] After the Human-Covenant War, built-in CNM suites have been integrated to the helmets of the [GEN2] variants of the Commando-class and the MP-class Mjolnir.[2][15] However, sometimes the CNM is integrated as an external attachment on armor like the INTRUDER-class Mjolnir,[11] while certain CNM variants are still optional attachments, like the CNM[5] on the Mark VII helmet.[16]


The CNM[5] could be employed on the Mjolnir Mark VII helmet.[16]


The ODST-CNM is a specialized variant of the CNM employed by the ODSTs. One was employed by Edward Buck during the Battle of Mombasa.[17][13]

"Camera" variant[edit]

This CNM variant resembles a camera, and is typically worn on the right side of the helmet.

"Tall" variant[edit]

This CNM variant is longer, featuring two circular sensors, and can be worn on either side of the helmet.

FC configurations[edit]

The modularity of the MJOLNIR armor has made it possible to attach multiple modules on the helmet. In cases where a CNM and a Hardened Uplink (HUL) are both employed, the configurations are designated "FC", "FC-I", and "FC-I[2]" depending on the variants used. FC refers to the configuration in which the "tall" CNM variant and an external HUL are both attached to the helmet.[9] FC-I refers to the configuration in which an external HUL, along with the CNM-I, are integrated on the "camera" CNM variant, though this configuration has only been observed on the MJOLNIR/AA variant.[5] FC-I[2] refers to the configuration in which both the "tall" CNM and HUL[3] are attached to the helmet.[6][12]


The CNM and its variants serve as cosmetics and have no impact on gameplay.

Halo: Reach[edit]

The "camera" and "tall" variants of the CNM are available as attachments on several helmets in the armor permutations of Halo: Reach. The device is priced at different levels of Credits, depending on the base helmets. In Halo: The Master Chief Collection, the same CNM-attached helmets are unlockable in Season 1: Noble.

Halo Infinite[edit]

The CNM[5] will be available on the Mark VII helmet in Halo Infinite.[16]

Production notes[edit]

  • During the Halo: Reach Multiplayer Beta, the Mark V[B] helmet had a "CNM" upgrade available, though the CNM resembled a sun visor which extended above the visor. The device cost 2,000 cR, but was cut from the final game.
  • During the Halo: Reach Multiplayer Beta, the "camera" variant of the CNM on the CQC helmet, along with UA attachment on the Mark V[B] helmet, was labelled as HUL. The "tall" variant on the Military Police helmet, however, was correctly labelled "CNM".
  • In the final release of Halo: Reach, two mislabeled helmet attachments involved the CNM:
    • The standard HUL variant mislabeled as the CNM on the EVA[C] helmet.
    • The "Camera" CNM variant mislabeled as the UA/HUL-I on the Mark VI helmet.
  • Although the ODST armor/HVY armor in the Halo 3 portion of Halo: The Master Chief Collection was based on the armor worn by Victor Ramos in Halo: Fireteam Raven, Ramos's helmet did not employ the UA and CNM attachments in Halo: Fireteam Raven.


List of appearances[edit]


  1. ^ The in-game option in Halo: Reach Armory refers to the attachment as "HUL-I".


  1. ^ Halo: Reach - Armory
  2. ^ a b c Halo 5: Guardians - Spartan Appearance Customization: Commando Description "COMMANDO armor features an integrated Command Network Module (CNM) for real-time synchronization with the UNSC battlenet."
  3. ^ a b Halo: Reach - Campaign models
  4. ^ a b Halo: Reach - Armory: ODST and Air Assault - UA/CNM Helmet Descriptions "Up-armored variant with Command network module"
  5. ^ a b c Halo: Reach - Armory: Air Assault - FC-I Helmet Description "Command network module-Improved; external hardened uplink. A favorite of Pathfinder units."
  6. ^ a b Halo: Reach - Armory: Commando - UA/FC-I[2] Helmet Description "Up-armored variant with external command network and hardened 3rd generation uplink modules."
  7. ^ a b Halo: Reach - Armory: Military Police and CQB - HU/RS/CNM Helmet Descriptions "Hardened uplink/remote sensor package with command network module."
  8. ^ a b c d e Halo: Reach - Armory: EOD, Operator, EVA, and Mark V - CNM Helmet Descriptions "Command network module; standard issue to UNSC Special Forces unit commanders"
  9. ^ a b Halo: Reach - Armory: Grenadier - UA/FC Helmet Descriptions "Up-armored variant with command network and external uplink modules."
  10. ^ a b Halo: Reach - Armory: HAZOP - CNM-I Helmet Description "Command network module-Improved; upgraded variant of the standard issue CNM unit."
  11. ^ a b Halo 5: Guardians - Spartan Appearance Customization: Intruder Description "The INTRUDER helmet features a full-featured Command Network Module and multi-channel drone controller. The drone controller interfaces directly with Unified Ground Command (UNICOM) kill box management and aerospace deconfliction systems."
  12. ^ a b Halo: Reach - Armory: Mark VI - FC-I[2] Helmet Description "External command network and hardened 3rd-generation uplink modules."
  13. ^ a b Halo: The Essential Visual Guide, page 26
  14. ^ a b Halo: Reach - Armory: Scout and Security - CBRN/CNM Helmet Descriptions "For operations in hazard zones; command network module."
  15. ^ Halo 5: Guardians - Spartan Appearance Customization: Military Police Helmet Description "Previously available only to Beta-5 security teams and select Army rapid-reaction forces, Military Police helmets have found a home with Spartan-IV fireteams that require its hardened uplink, command network module, and remote sensor controller."
  16. ^ a b c Halo Infinite Multiplayer Overview
  17. ^ Halo 3: ODST - Edward Buck in-game model