MP-class Mjolnir

The MJOLNIR Powered Assault Armor/MP, also known as Military Police, is a UNSC military police helmet adapted for use with the Mark V MJOLNIR Powered Assault Armor, and later upgraded to MJOLNIR Powered Assault Armor [GEN2] standards.

Design details
The MJOLNIR Mark V Military Police variant, designated Mark V. [MP], was designed to assist Spartans serving as part of a Beta-5 Security (B5S) details. The armor is fairly standardised, showing a clear relationship with the enclosed version of the standard UNSC CH252 helmet, but features a significant array of varied sensor upgrades. It is one of just a handful of assets shared between branches of the UNSC's armed forces. As with many Mark V variants, the helmet is compatible with a variety of attachments including the PZY-955SSA WILLOW remote sensor, MK55 CBRN module and AN/PZY-6011Y TYPHON Command Network Module.

Visually, the helmet bears an almost identical appearance to the CH252 and ECH252 helmets employed by the UNSC Army and Marine Corps, and is presumably compatible with similar attachments such as the O/I optics device.

GEN2 compatibility
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. This variant comes equipped with dual PZY-955SSA WILLOW remote sensors, mounted on either side of the helmet.

Halo: Reach - Mark V
"The MK.V[MP] is a shared asset with Beta-5 Security; as such, sensor upgrades are many and varied."

The Military Police helmet variants are unlockable in the armor customisation of Halo: Reach via Halo Waypoint career milestones and achievements - due to the shutdown of Xbox 360 Halo servers in early 2022, this helmet is no longer attainable in the original Xbox 360 release of Halo: Reach. In Halo: The Master Chief Collection, the Military Police helmet is attainable in the Season 1: Noble progression system.

Halo 5: Guardians - Upgraded GEN1
The Military Police helmet was introduced into Halo 5: Guardians as a useable helmet with the release of the Classic Helmet REQ pack on February 9, 2017. The helmet has no skin variants.

Production notes
In the Halo: Reach Multiplayer Beta, the Military Police's HU/RS/CNM variant was originally termed the HESA-E attachment. This was changed in the final game for reasons unknown.

List of appearances

 * Halo: Reach
 * Halo 5: Guardians