XM478 Kodiak

The XM478 Kodiak is a hybrid self-propelled artillery piece and battle tank designed by and a successor to the .
==History==
During the as began the designing process for a successor to the that also doubled as of their own "version" of self-propelled artillery piece and tank destroyer while incorporating reverse-engineered technology featured on the . The final design of the XM478 Kodiak was conceived by the year 2553 and production began after the Human-Covenant War. Due to the cost of manufacturing a single XM478 and its relatively niche role, no more than a few dozen were ever constructed.
==Specifications==
Like its predecessor the and the that inspired its design, the XM478 Kodiak must lock itself down before deploying its main gun. The XM478 Kodiak's 180 mm howitzer fires rocket-assisted shells at a maximum rate of 27 rounds per minute with a maximum firing range of 90 km (56 miles). Two main types of shells exist for the XM478's 180 mm howitzer – canister (C) and Semi-Armor-Piercing High-Explosive (SAPHE). The canister shell is intended for anti-personnel use and is loaded with tungsten ball fragments; when the shell is a few dozen meters above the target, it disintegrates, raining down its tungsten fragments in a conical formation. The SAPHE shell is used for harder targets such as enemy armored vehicles and structures and possesses a depleted uranium penetrator at the tip; this shell is also loaded with tungsten ball fragments but blasts these fragments in all directions when detonating on impact.
While mobile, the XM478 Kodiak instead uses a pair of 90 mm guns that fire shells that are similar to those used by the but scaled down. Each of these guns possesses a maximum rate of fire of 33 rounds per minute and can be fired simultaneously or alternating.
The XM478 is also mounted with an to be used by a machine gunner to take on targets that are too close for the main guns to engage. The machine gun can be chambered in the standard 7.62×51mm cartridge or the larger .50 Impaler cartridge; in the case of the latter, the M247 is loaded with 12.7mm SLAP rounds.
==List of appearances==
*Halo: The Platinum Annals (First appearance)