Legiones Astartes – Legion Sicaran Arcus Squadron

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As part of a program initiated by the Primarch Roboute Guilliman, seeking to grant a Legion strike force access to highly specialised weapon systems without the need to employ numerous vehicles for each role, the Sicaran hull was chosen to mount the newly developed twin Arcus launcher. Capable of deploying a wide range of warheads, each crafted to fulfil a distinct tactical niche, the Arcus was intended to become the cornerstone of a new tactical doctrine the Master of Ultramar had begun to formulate, allowing small Legiones Astartes forces to operate without extensive support and in smaller numbers than during the Great Crusade.

Despite being limited to a few prototype vehicles at the onset of the Horus Heresy, and the doctrinal issues that kept it out of production on most major Forge Worlds, a number of Legion home worlds produced small numbers of this variant. Of particular note is the inclusion of the neutron-flux warhead, a Terran development dating back to the years prior to the alliance with Mars. Continued production of these weapons was the cause of the Mechanicum’s refusal to sanction the Arcus pattern hull.

  • Legion Sicaran Arcus Squadron 215 pts
Armour Transport Capacity
M BS Front Side Rear HP Base
Legion Sicaran Arcus (base: Use model)
Legion Sicaran Arcus 16 4 13 12 12 4 - Use model
Unit Composition
  • 1 Legion Sicaran Arcus
  • Turret Mounted Arcus missile launcher (with Arcus warheads)
  • Hull (Front) Mounted heavy bolter
  • Two Sponson Mounted heavy bolters
  • Smoke launchers
Unit Type
Special Rules
  • Legiones Astartes (X)
  • A Legion Sicaran Arcus Squadron may take:
  • - Up to 1 additional Legion Sicaran Arcus
    +200 points each
  • Any Legion Sicaran Arcus may exchange both of its Sponson Mounted heavy bolters for one of the following options:
  • - Two Sponson Mounted heavy flamers
  • - Two Sponson Mounted lascannon
    +10 points per model
  • - Two Sponson Mounted volkite culverin
    +10 points per model
  • Any Legion Sicaran Arcus may take any of the following upgrades for its Arcus launcher:
  • - Skyspear warheads
    +15 points per model
  • - Pyrax warheads
    +10 points per model
  • - Neutron-flux warheads
    +15 points per model
  • Any Legion Sicaran Arcus may take any of the following:
  • - One Hull (Front) Mounted hunter-killer missile
    +5 points each
  • - Searchlights
    +5 points each
  • - Helical targeting array
    +15 points each

These weapons are grafted to the same targeting system for greater accuracy.

When attacking with a weapon that has this special rule, the controlling player may re-roll all failed To Hit rolls.
Rending (X)

Some weapons can inflict critical strikes against which no armour can protect.

If a model has the Rending special rule, or is attacking with a Melee weapon that has the Rending special rule, there is a chance that their close combat attacks will strike a critical blow. For each To Wound roll equal to or higher than the value listed, the target automatically suffers a Wound, regardless of its Toughness. The controlling player may choose to resolve these Wounds at AP 2 instead of the weapon’s normal AP value.

Similarly, if a model makes a Shooting Attack with a weapon that has the Rending special rule, a To Wound roll of equal to or greater than the listed value wounds automatically, regardless of Toughness, and is resolved at AP 2.

In either case, against Vehicles each Armour Penetration roll of equal to or greater than the listed value allows a further D3 to be rolled, with the result added to the total Strength of the attack. These Hits are not resolved at AP 2, but are instead resolved using the weapon’s AP value.

For example, a model with the Rending (5+) special rule that rolls To Wound against a non-Vehicle model will wound automatically on the roll of a 5+, and the attacking player has the choice of using an AP value of 2 instead of the AP value of their weapon.
Legiones Astartes (X)

The Space Marines of the Emperor’s Legions are genetically engineered, psycho-indoctrinated warriors with superhuman abilities, and minds and souls tempered for war. Each of the Legions has its own idiosyncrasies and character – the product of their gene-seed and the unique warrior cultures fostered by their masters.

Any unit with this special rule will have a number of additional special rules and abilities specific to their ‘named’ Legion, all of which will be defined in other Horus Heresy – Age of Darkness publications. A Space Marine unit may only have one such ‘named’ rule, e.g., Legiones Astartes (Sons of Horus). Space Marine units from a different Legion may only be included in an army using an Allied Detachment and in conjunction with the Allies in the Age of Darkness chart.
Gets Hot

Some weapons are fuelled by unstable power sources and risk overheating with each shot – often to the detriment of their wielder.

When firing a weapon that Gets Hot, roll To Hit as normal. For each unmodified To Hit roll of 1, the firing model immediately suffers a single Wound with an AP value equal to that of the weapon that was used to attack (Armour Saves, Invulnerable Saves and Feel No Pain rolls can be taken, but not Cover Saves or Shrouded rolls) – this Wound cannot be allocated to any other model in the unit. A Vehicle instead rolls a D6 for each roll of a 1 To Hit. If this roll results in a 1 or 2, the Vehicle suffers a Glancing Hit.
Assault Weapons

Assault weapons either fire so rapidly or indiscriminately that they can be fired while a warrior is moving.

A model attacking with an Assault weapon makes the number of Attacks indicated on its profile regardless of whether the bearer has moved or not. A model carrying an Assault weapon can make a Shooting Attack with it in the Shooting phase and still Charge in the Assault phase.

Plasma blaster18"74Assault 2, Rending (4+), Gets Hot
Heavy flamer

Heavy flamer
Assault 1

Heavy Weapons

These are heavy, man-portable weapons that typically require reloading between each shot or bracing to counter their recoil.

When making a Shooting Attack, a model with a Heavy weapon attacks the number of times indicated. If a model equipped with a Heavy weapon moved in the preceding Movement phase, they can only make Snap Shots with that Heavy weapon during the Shooting phase. Note that weapons with the Blast special rule cannot fire Snap Shots. Models that make Shooting Attacks with Heavy weapons in the Shooting phase cannot Charge in the ensuing Assault phase.

Reaper autocannon36"74Heavy 2, Rending (6+), Twin-linked
Breaching (X)

Some weapons are capable of breaching armour with a terrifying ease, whether by specially designed munitions, careful targeting or sheer brute power.

When rolling To Wound for a model that has the Breaching (X) special rule, or is attacking with a weapon that has the Breaching (X) special rule, for each To Wound roll equal to or higher than the value listed in brackets, the controlling player must resolve these wounds at AP 2 instead of the weapon’s normal AP value. This rule has no effect on models that do not have Wounds, such as models with the Vehicle Unit Type.

For example, a model with the Breaching (5+) special rule that rolls To Wound and rolls a result of ‘5’ or higher, the Wound inflicted gains an AP of ‘2’ regardless of the AP value listed on the weapon’s profile. Note that a weapon that has both the Breaching (X) and the Gets Hot special rules always uses the base AP of the weapon when rolls of ‘1’ To Hit inflict Wounds on the attacking model.

The ancient volkite weaponry employed by the armies of Terra in the earliest years of the Great Crusade fired arcing blasts of energy rather than solid projectiles.

After normal attacks by this weapon have been resolved, count the number of unsaved Wounds caused on the target unit. Immediately resolve a number of additional automatic Hits on the same unit using the weapon’s profile equal to the number of unsaved Wounds – these can then be saved normally. Models in the targeted unit must still be in range in order for these additional Hits to take effect. These additional Hits do not themselves inflict more Hits and do not benefit from any other special rules possessed by the attacking model, such as Preferred Enemy (X) or Precision Strikes (X).
Ignores Cover

This weapon fires ammunition that cheats an enemy of their shelter.

Cover Saves and Damage Mitigation rolls granted by the Shrouded special rule cannot be taken against Wounds or Hull Point damage caused by weapons with the Ignores Cover special rule. This includes Cover Saves granted by Reactions and other special rules as well as Cover Saves conferred by terrain.

Coming under fire without knowing where the shots are coming from, or having ordnance rain down from the skies, can shake the resolve of even the bravest warriors, making them dive flat and cling to whatever cover presents itself.

If a non-Vehicle unit suffers one or more unsaved Wounds from a weapon with the Pinning special rule, it must take a Leadership test once the firing unit has finished its Shooting Attacks for that Phase. This is called a Pinning test. If the unit fails the Test, it is Pinned. As long as the Test is passed, a unit can be called upon to take multiple Pinning tests in a single turn, but only once for each unit shooting at them.

A unit that is affected by any of the following conditions does not take Pinning tests, and if called upon to do so is considered to automatically pass them:
  • The unit is locked in combat.
  • The unit is already Pinned (the unit remains Pinned, but takes no further Tests).
  • The unit is composed entirely of Vehicle models.
  • The unit is Embarked on a Transport Vehicle.
  • The target unit is affected by the Fearless special rule.
A unit that has become Pinned cannot Move, Run or Charge. It can only fire Snap Shots if it attacks during the Shooting phase and cannot make Reactions in any Phase. At the end of its following turn, the unit returns to normal and the unit is free to act as normal from then on. Whilst it is Pinned, a unit is affected normally by enemy actions (for example, it takes Morale checks as normal). If the unit is forced to move, for example if it has to Fall Back, it returns to normal immediately. If assaulted, the unit will fight as usual, but because they are not set to receive the Charge, enemy units do not receive the Initiative penalty for assaulting a unit in Difficult Terrain, even if the unit is in Difficult Terrain. If a unit becomes Pinned during a Charge, then that Charge automatically fails. Units that are locked in combat cannot be Pinned and do not take Pinning tests.
One Use/One Shot

Certain items can only be used once, so a general must choose wisely when to do so.

A weapon or ability with this special rule can only be used once during the course of a battle. Once a weapon with the One Use or One Shot special rule has been used to attack, it is no longer counted as a weapon and may not be destroyed (for example, by rolls on the Vehicle Damage table) or repaired by any other rule or effect.
Army List
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Skyfire weapons excel at shooting down enemy aircraft.

A model which has this special rule, or that is firing a weapon with this special rule, fires using its normal Ballistic Skill when shooting at Flyers and Skimmers, but it can only fire Snap Shots against other targets.
Large Blast
Large Blast weapons use the 5" Blast marker, but otherwise obey all the rules for Blast weapons.

Some weapons strike with enough force to make a mockery of anything except the most reinforced of armoured shells.

Attacks with this special rule may re-roll failed Armour Penetration rolls against Vehicles and Buildings (both with Shooting Attacks and in close combat) and re-roll Glancing Hits, in an attempt to instead get a Penetrating Hit, but the second result must be kept.
Helical Targeting Array

The helical targeting array is a complex system of augurs and tracking baffles. It is designed to enable a war machine’s weapons to strike true, even against the most evasive targets, and to penetrate even the most esoteric of shrouds.

The controlling player of a model with a helical targeting array may activate it at the start of any of their own turns, or, if the controlling player is not taking the first turn of the battle, at the start of the battle, before the beginning of the opposing player’s first turn. Once the helical targeting array is activated, the model is affected by the following conditions until the beginning of the controlling player’s next turn:
  • The model may not move, Run or declare or make any Reactions other than the Interceptor or Overwatch Reaction.
  • The controlling player may choose to use the Skyfire special rule when making any Shooting Attacks with the model.
  • No model may make a Damage Mitigation roll provided by the Shrouded special rule against an attack made by a model with a helical targeting array while it is active.
  • When the model makes a Shooting Attack as part of the Interceptor Reaction, the Reaction does not cost the controlling player a point from their Reaction Allotment. This does not allow the unit to make more than one Reaction per Phase, but does allow the controlling player to exceed the normal three Reactions limit in a given Phase.
  • When a model with the Vehicle Unit Type and a helical targeting array makes a Shooting Attack as part of the Interceptor Reaction, that model may fire all of its weapons, not just Defensive Weapons, as part of the Shooting Attack.
Weapon Mounts
Hull (Arc) Mounted – Hull (Arc) Mounted weapons will always specify a single Firing Arc and may only fire at targets in that Firing Arc. The different Hull arcs are: Front, Rear, Left and Right. Some units may specify Side as an arc – this means both Left and Right arcs.

For example, a Legion Land Raider Proteus has a Hull (Front) Mounted Heavy Bolter – this weapon may only fire at targets in the Front Firing Arc.

Turret Mounted – Turret Mounted weapons may fire at targets in any Hull arc (Front, Side or Rear) without restriction.

Centreline Mounted – Centreline Mounted weapons may only fire at targets in the Centreline Firing Arc.

Sponson Mounted – Sponson Mounted weapons are usually mounted in pairs, one on each side of a Vehicle (the Vehicle’s profile will note if this is not the case) and fire into the appropriate Sponson Firing Arc (either left or right). If the target of a Vehicle’s Shooting Attack is within the Firing Arc for only one of a pair of Sponson weapons, then the out of arc weapon may be fired at another enemy unit of the controlling player’s choice. This Secondary Target must be in the weapon’s line of sight and Firing Arc, but may be from a different unit than the original target.

Pintle Mounted – Pintle Mounted weapons may fire at targets in any Firing Arc without restriction, but are always counted as Defensive weapons regardless of the weapon type or its statistics.
Smoke Launchers

Many armoured fighting vehicles bear simple grenade systems rigged to distribute smoke upon being triggered, granting the vehicle a brief and passing cover that can prove crucial in the worst of situations. Such devices are of most use in slow moving engagements, as a vehicle at maximum speed will quickly disperse or outrun its own smoke shield.

The controlling player may choose to trigger smoke launchers once a model with them has completed its movement in the Movement phase, and may only choose to trigger them if the model has moved no faster than Combat Speed that turn. Once triggered, the model with smoke launchers counts as being more than 25% obscured, regardless of terrain, until the start of the controlling player’s next turn and gains a 6+ Cover Save. A model whose smoke launchers have been triggered may not make any Shooting Attacks, except as part of a Reaction, in the same turn. Smoke launchers may only be used once per battle, and once triggered may not be further used – in addition, they do not count as a weapon and may not be targeted by Weapon Destroyed results on the Vehicle Damage table.
Hunter-killer missile

Hunter-killer missile
Heavy 1, One Shot


Mounted illum-beacons or simple electric torches, many vehicles mount some kind of portable light to aid in target identification and destruction in darkness and poor weather.

A model with searchlights ignores the 24" limit to line of sight imposed by the Night Fighting rules when making Shooting Attacks, however enemy units also ignore that same restriction when making Shooting Attacks that target a model with searchlights.

In addition, any unit that has been the target of a Shooting Attack made by a unit with searchlights (regardless of whether any Hits were inflicted or not) may be freely targeted for Shooting Attacks by any other unit in the same Shooting phase, ignoring the 24" restriction to line of sight imposed by the Night Fighting rules.

Searchlights do not count as weapons and may not be targeted by the Weapon Destroyed result on the Vehicle Damage table.
Heavy bolter

Heavy bolter
Heavy 4

Volkite culverin

Volkite culverin
Heavy 5, Deflagrate


Heavy 1, Sunder


Designed specifically to degrade the complex neural circuitry and cogitators of the Mechanicum’s automata, these weapons are considered an affront to their Order. The exotic radiation emitted by such devices is the bane of the otherwise indefatigable steel warriors of the Mechanicum, leaving them as motionless, lifeless husks.

A weapon with this special rule gains the Instant Death special rule when targeting models with the Automata Unit Type.
Arcus missile launcher

Arcus missile launcher
 - Arcus warheads
Heavy 5, Twin-linked
 - Skyspear warheads
Heavy 5, Skyfire, Twin-linked
 - Pyrax warheads
Heavy 1, Large Blast (5"), Ignores Cover, Pinning
 - Neutron-flux warheads
Heavy 4, Twin-linked, Neutron-flux, Breaching (5+)

© Vyacheslav Maltsev 2013-2024