Colossus Bombard

A gun so big, there's no room for a platform.

This article is about the Imperial Guard artillery piece. For information on the weapon carried by the Colossus Bombard, see Colossus Siege Mortar.

The Colossus Bombard is an artillery piece used by the Imperial Guard for destroying enemies in fortified positions. Though the Basilisk Artillery Gun has a longer cannon, the Colossus wields the biggest, a great siege cannon that lobs shells the size of a man. Rather than penetrating spikes or fragmenting airbursts, its shells create massive shockwaves that defy armor and cover.

It is different from the other artillery pieces in that it is sometimes built on the chassis of a Leman Russ Battle Tank (despite a Chimera being larger). The cannon is so large that it leaves room for only a driver to sit inside, and has no space for a platform for its firing crew. Its shells are too large to manually load anyway, so it comes with a crane to do the actual loading, while gun crew takes positions around the rear of the vehicle to operate the crane and aim and fire the cannon.

When the cannon does fire, there is too much recoil for the cannon's hydraulics to absorb it all; accordingly, the Colossus is equipped with a recoil spade that digs into the ground and braces the tank, preventing it from rolling back excessively.


The Colossus cannon has the same range as the Basilisk Artillery Gun's Earthshaker (with a somewhat smaller minimum range), but fires with strength 6 rather than 9 (despite the shells being bigger). That said, its shells ignore cover saves, and as AP -2 is enough to ignore most armor and S6 will wound almost all basic infantry on either a 3+ or a 2+, it is a potent anti-blob weapon -- unless it is shooting at units with an invulnerable save or a 2+ armor save, it will probably vaporize whatever it hits without any rolls.

The original Colossus model was produced by Forge World for Imperial Armour Volume Three: The Taros Campaign. The rules were later brought into the main-line Imperial Guard army list with the fifth edition Codex. Funnily enough, although the original Colossus is built on the Leman Russ Battle Tank chassis, it had the same armor values as the Chimera and Chimera-based artillery pieces (unsurprising as little armor would be needed from kilometers away). In the IG codex, the Colossus was depicted as being Chimera-based, while Forge World's Leman Russ-based artillery piece is now known as the "Imperial Bombard" (which is still a bit odd, as GW's Epic-scale Bombards were clearly Chimera-based as well).

6th Edition - The Colossus has officially been removed from the Imperial Guard, apologies, Astra Militarum Codex. From now on to use it you'll have to use the Forgeworld Rules which are in Imperial Armour Volume One, Second Edition.

8th Edition - The Colossus is found in Index Imperial Armour - Forces of the Astra Militarum.

Horus Heresy - The Auxillia Bombard has an appropriate front armor value of 13.

Vehicles of the Imperium of Man
Walkers Dreadnought - Nemesis Dreadknight - Ironstrider Ballistarius
Onager Dunecrawler - Penitent Engine - Sentinel - Sydonian Dragoon
Transports Chimera - Crassus Armored Assault Transport - Drop Pod - Goliath Truck
Gorgon Armored Assault Transport - Hades Breaching Drill - Immolator
Pegasus AAV - Razorback Transport - Repressor - Rhino Transport - Taurox - Testudo
Trojan Support Vehicle - Triaros Armoured Conveyer - Tunneling Transport Vehicles
Atlas Recovery Tank - Achilles Ridgerunner - Bane Wolf - Bike Squad - Centaur Utility Vehicle
Cyclops Demolition Vehicle - Devil Dog - Hellhound - Land Crawler - Pegasus AFV
Salamander Reconnaissance Tank - Scylla Light Tank - Siegfried - Tauros - Venator - Wolfquad
Caladius Grav-Tank - Krios Battle Tank - Land Raider - Leman Russ Battle Tank - Predator
Ragnarok - Sabre Tank Hunter - Sicaran Battle Tank - Spartan Assault Tank - Vindicator
Ordnance Basilisk Artillery Gun - Colossus Bombard - Deathstrike Missile Launcher
Exorcist - Griffon Heavy Mortar Carrier - Hunter - Hydra Flak Tank
Manticore Launcher Tank - Medusa Siege Gun - Rapier Armoured Carrier
Stalker - Thunderfire Cannon - Whirlwind - Wyvern Suppression Tank
Baneblade - Capitol Imperialis - Cerberus Heavy Tank Destroyer
Fellblade - Leviathan - Macharius Heavy Tank - Macrocarid Explorator
Malcador Heavy Tank - Mastodon - Ordinatus - Typhon Heavy Siege Tank
Skimmers Javelin Attack Speeder - Grav-Rhino - Land Speeder - Pallas Grav-Attack
Flyers Archaeocopter - Caestus Assault Ram - Corvus Blackstar - Fire Raptor - Nephilim Jetfighter
Sky Talon - Space Marine Landing Craft - Storm Eagle - Stormbird - Stormhawk
Stormraven - Stormtalon - Stormwolf - Thunderhawk - Valkyrie - Vendetta - Vulture
Fighters &
Avenger Strike Fighter - Lightning Fighter - Marauder Bomber
Stormfang - Thunderbolt Fighter - Xiphon Interceptor
Spacecraft Aquila Lander - Arvus Lighter - Boarding Torpedo - Devourer Dropship
Faustus Interceptor - Fury Interceptor - Shark Assault Boat - Starhawk Bomber
Tetrarch Heavy Lander
Titans Imperial Knight - Warhound Scout Titan - Reaver Battle Titan
Warlord Battle Titan - Warbringer Nemesis Titan - Emperor Battle Titan
Forces of the Imperial Guard
Command: Commissar - Enginseer - Imperial Guard Command Squad - Ministorum Priest
Primaris Psyker - Regimental Advisors - Tank Commander
Troops: Armoured Fist Squad - Infantry Squad - Field Chiurgeon - Heavy Weapons Squad
Militarum Veteran Squad - Ogryn Squad - Penal Legion - Psyker Battle Squad
Ratling Squad - Rough Rider Squad - Special Weapons Squad - Stormtrooper
Transports: Aurox Armoured Transport - Argoran Armoured Transport - Chimera
Crassus Armored Assault Transport - Gorgon Armored Assault Transport
Hades Breaching Drill - Hellbore - Mole - Taurox - Termite - Testudo
Trojan Support Vehicle - Pegasus AAV
Light Vehicles: Atlas Recovery Tank - Bike Squad - Bane Wolf - Centaur Utility Vehicle
Cyclops Demolition Vehicle - Devil Dog - Hellhound - Land Crawler - Scylla
Salamander Reconnaissance Tank - Sentinel - Siegfried - Tauros - Venator
Pegasus AFV
Tanks & Ordnance: Basilisk Artillery Gun - Carnodon - Colossus Bombard - Deathstrike Missile Launcher
Griffon Heavy Mortar Carrier - Heavy Quad-Launcher - Hydra Flak Tank
Leman Russ Battle Tank - Manticore Launcher Tank - Medusa Siege Gun
Ragnarok - Wyvern Suppression Tank
Superheavy Vehicles: Baneblade - Capitol Imperialis - Leviathan - Macharius Heavy Tank
Malcador Heavy Tank
Flyers & Bombers: Avenger Strike Fighter - Lightning Fighter - Marauder Bomber
Thunderbolt Fighter - Valkyrie - Vendetta - Vulture
Forces of the Lost and the Damned
Command: Apostate Cardinal - Chaos Champion - Renegade Command Squad
Renegade Demagogue - Renegade Enforcer - Rogue Psyker
Human Troops: Cultist - Disciple Squad - Pontifex Guard - Renegade Infantry Platoon
Renegade Marauder Squad - Renegade Support Squad - Negavolt Cultist
& Beasts:
Beastmen Attack Squad (Khorngors - Pestigors - Slaangors - Tzaangors)
Chaos Beast - Chaos Hound - Chaos Spawn - Mutant Rabble
Ogryn Brute (Ogryn Berserker - Plague Ogryn) - Plague Zombie
Vehicles: AT70 Reaver Battle Tank - AT83 Brigand Super Tank - Chimera - Hellhound
Leman Russ Battle Tank - Salamander Command Vehicle - Stalk Tank - Sentinel
STeG 4
Artillery: Basilisk Artillery Gun - Colossus Bombard - Griffon Heavy Mortar Carrier
Hydra Flak Tank - Minotaur Artillery Tank - Medusa Siege Gun
Rapier Armoured Carrier - Wyvern Suppression Tank
Daemon Engines: Blight Drone - Blood Slaughterer - Brass Scorpion - Lord of Skulls - Plague Hulk
Super Heavies: Baneblade - Macharius Heavy Tank - Malcador Heavy Tank - Valdor Tank Hunter
Flyers: Arvus Lighter - Hell Blade - Hell Talon - Valkyrie