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Terminal.png This article, M117 Light-Weight Field Howitzer, was written by Ajax 013. Please do not edit this fiction without the writer's permission.
M117 Light-Weight Field Howitzer
Production information


Technical specifications
  • Length (Combat): 10.5 metres

Length (Travel): 6.1 metres

  • Weight: 3,200 kilograms
Ammunition Type


Rate of Fire

Crew dependent (2-5 RPM)


27 kilometres


Necros War




The M117 Light-Weight Field Howitzer is a UNSC crew-served Howitzer, used for long range, indirect fire support.


The M117 LFH is a commonly used Howitzer, designed to be towed or air dropped into combat theatres. The M117 is used in batteries to provide supporting fire, most often for infantry units. The M117 is grouped into batteries of four, with a battery commander and associated vehicle. On the ground, the gen is operated by five crewmen, including a commander, responsible for directing the crew and emplacement of the gun, the gunner, who designates and engages targets, the assistant gunner, who physically operates the gun, the loader, who organises the next round, including fusing and bleed and the assistant loader, who actually loads the next round.

The gun is usually towed by a M12A4 Warthog Knight Light Recon Vehicle, with three crewmen, and a following M597 Warthog Ammunition Carrier with two crewmen and the majority of the ammunition. It can alternately be carried inside or outside a Pelican, or air lifted by a Merlin.

The gun itself is constructed from high strength titanium and related alloys, creating a strong, stable weapon, with a relatively low weight. The gun is relatively standard in design, with two wheeled struts that can deploy to dig in, along with two back facing spades. The gun itself is on a motorised turntable, linked directily to the fire control system. The cannon is designed to collapse in half for easy transport, reducing the over all length. It does this by unscrewing the forward element of the cannon and using motors to fold this over to fit flat against the top of the cannon. The gun barrel is made from carbonized metal, designed to reduce thermal distortion caused by frequent firing. The gun has a number of large, anti-recoil systems, allowing it to survive firing, while in turn turning the force of the recoil into energy to power the on-board system.

The gun is linked to a dataslate, which is linked to the War Net, allowing the gunner and commander to target enemy positions. Through this dataslate they can observe ground, aerial or satellite reconnaissance, along with the computerised firing sight on the gun. they can designate targets, change munition properties such as range and fusing and can arrange for Multiple Rounds, Simultaneous Impact. Through this dataslate, the battery commander can designate fire zones for all the cannons, and his commanding officer can similarly designate targets. Fire mission requests are sent through to the dataslate for the battery commander to approve or deny.

The M117 can fire all kinds of regular munitions, such as explosive, bomblet dispersing, smoke dispersing, flare shells and others. It can also fire more exotic GPS guided rounds, anti-armour and LASER guided munitions.

UNSC Remarks

Individual and Crew Served Weaponry of the UNSCDF


M6L Personal Defence Weapon System | M57 Pistol | M98 Compact | M19 Modular Pistol

Submachine Guns

M20A Submachine Gun | M12 Special Operations Carbine | M8Z Submachine Gun

Assault Rifles, Carbines, and Battle Rifles

MA6A Individual Combat Weapon System | M2A Carbine | M81 Special Purpose Carbine | M55C Enhanced Battle Rifle

Designated Marksman Rifles

M396 Designated Marksman Rifle | M97 Special Purpose Rifle | M113 Special Purpose Rifle

Machine Guns

M397 Individual Automatic Rifle | M739C Squad Automatic Weapon | M122 Light Machine Gun | M247B2 General Purpose Machine Gun | M247H2 Heavy Machine Gun | AIE-486K1 Heavy Machine Gun | M343A3 Heavy Machine Gun | M780 Special Purpose Machine Gun

Sniper Rifles

M22 Scout Rifle System | M818D Enhanced Modular Sniper Rifle System | M1091 Sniper Rifle System | Sniper Rifle System 99G-S6 Anti-Materiel | M99CA1 Special Application Scoped Rifle


M45F Close Assault Weapon System | M108A1 Close Assault Weapon System | M77 Extreme Close Quarters Combat System

Energy Weapons

Weapon/Anti-Vehicle Model 6B Grindell/Galilean Nonlinear Rifle | MX4 Light Support Weapon | M921 ARC

Non-Lethal Weapon

M2 Threat-Negation Device | MX9 Pulsed Energy Projectile System | M39 Long Range Tranquillizer Rifle

Missile and Rocket Launchers

M41B2 Medium Anti-Vehicle/Assault Weapon | M899 Light Anti Armour Weapon | M57 Light Multipurpose Assault Weapon | M1 Multiple Launch Rocket System | M25 Underslung Rocket Launcher

Grenade Launchers

M319N Individual Grenade Launcher | M23 Multiple Grenade Launcher | M363B RPD | M460C Automatic Grenade Launcher | M556 Counter Defilade Grenade Launcher | M24 Underslung Grenade Launcher | M26 Grenade Launcher Module


M71 Mortar | M78 Mortar | M81 Mortar


M117 Light-Weight Field Howitzer

Sentry Guns

M55 GUARD DOG Sentry Gun | M601 GARGOYLE Sentry Gun


M9 Dual Purpose/High Explosive Grenade | M2 Anti-Materiel Grenade | M70 Flash Bang Grenade | M43 Smoke Grenade

Anti-Personnel and Anti-Armour Mines

M320 Anti-Tank Mine | M341 Anti-Tank Mine | M362 Anti-Tank Mine | M121 Bounding Anti-Personnel Mine | M127 Anti-Personnel Mine

Explosive Devices

C-7 Foaming Explosive | C-13 Gertex | C-14 Plastic Explosive | C-15 Liquid Explosive | M303 Thermite Cord | M311 Detonation Cord | M382 Special Munition Attack Charge (Kinetic) | M390 Breaching Charge | M394 Clearance Charge | M404 Special Lightweight Attack Munition | M366 Demolition Charge | M376 Satchel Charge | M379 Explosive Pack

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