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Warhammer The Horus Heresy: Siege Assault Battle Group Review

Warhammer The Horus Heresy: Siege Assault Battle Group Review

By GUNNZO | Published: 2026-08-19

Category: Product Reviews

Dive into our detailed review of the Horus Heresy Siege Assault Battle Group, exploring contents, build options, and painting tips for your Legiones Astartes.

The Horus Heresy is a pivotal era in Warhammer lore, and the Siege Assault Battle Group brings that epic conflict to your tabletop. This boxed set is designed for players who want to field a formidable force of Legiones Astartes, focusing on close-quarters combat and siege warfare. In this review, we'll break down what's inside, the build options, and how it performs on the battlefield.

Whether you're a veteran of the Warhammer 30k scene or new to the Horus Heresy, this set offers a compelling mix of models that can form the core of a devastating assault army. We'll also touch on painting techniques to make your miniatures stand out, and how this set compares to other options in the range.

What's in the Box?

The Siege Assault Battle Group is a substantial box, containing multiple sprues of plastic components. You'll find a mix of tactical marines, assault marines, and characters, all with options to customize. The set is designed to give you a balanced force quickly, with enough models to field a small but effective detachment.

The details on the models are crisp, with plenty of heraldry and wargear options. The kit includes both melee and ranged weapons, allowing you to tailor your squads to your preferred playstyle. Whether you're building a zone mortalis force or a more traditional line-breaker army, this box has you covered.

  • Includes multiple sprues with a variety of Legiones Astartes models.
  • Options for melee and ranged weapon loadouts.
  • Compatible with other Horus Heresy kits for expanded customization.

Build Options and Customization

One of the standout features of this set is the sheer number of build options. Each tactical squad can be equipped with bolters, chainswords, or special weapons, letting you adapt to different missions. The assault marines come with jump packs and a choice of pistols and melee weapons, perfect for hitting the enemy's flanks.

The characters included can be assembled as a praetor or a centurion, with options for power axes, thunder hammers, or relic blades. This flexibility means you can build your force to match your own narrative, whether you're fighting for the Imperium or the Warmaster.

  • Multiple head and shoulder pad options for personalization.
  • Weapon choices allow for tactical flexibility.
  • Characters can be built as praetors or centurions.

Painting Your Siege Assault Force

Painting your Legiones Astartes is a rewarding experience, and this set offers plenty of opportunity for detailed work. Start with a primer, then base coat your armor in your chosen legion colors. The models have plenty of flat surfaces, making them ideal for applying decals or freehand heraldry.

For a weathered look, consider using a drybrush technique to bring out the edges. You can also use washes to add depth to the recesses. If you're looking for a specific paint, the Mr. Color range offers excellent coverage and a smooth finish. For example, Mr. Color Paint C383 Dark Green (Kawanishi) can be a great choice for a subtle green armor tone.

Don't forget to seal your work with a matte varnish to protect it during gameplay. The TAMIYA Acrylic Thinner is perfect for thinning your paints to a smooth consistency, ensuring a professional-looking result.

  • Use a primer to ensure paint adhesion.
  • Consider a drybrush for edge highlights.
  • Seal with varnish to protect your minis.

On the Tabletop: Performance and Tactics

The Siege Assault Battle Group is built for aggressive play. With a mix of tactical and assault squads, you can push forward and engage the enemy in close combat, which is where the Horus Heresy truly shines. The assault marines can deep strike or use their jump packs to cover ground quickly, while the tactical squads provide fire support.

This box is particularly effective in Zone Mortalis missions, where the close-quarters fighting favors melee units. The characters included can lead your force, providing buffs to nearby units. Whether you're playing a narrative game or a competitive match, this set gives you a solid foundation.

  • Assault marines excel at flanking maneuvers.
  • Tactical squads can hold objectives while assault units advance.
  • Characters provide leadership and combat buffs.

Comparing to Other Horus Heresy Sets

When compared to other boxed sets in the Horus Heresy range, the Siege Assault Battle Group offers a unique focus on melee. While other sets might emphasize ranged combat or vehicle support, this box is all about getting your troops into the thick of it. This makes it a great addition to any collection, especially if you're building a World Eaters or Space Wolves force.

If you're looking to expand your force, consider pairing this with other kits like the Warhammer 40000: T'au Empire: Riptide Battlesuit for a different playstyle, or the Warhammer 40000: Tyranids: Tyranid Prime With Lash Whip for a completely different faction. However, for a pure Legiones Astartes experience, this box is hard to beat.

Warhammer 40000: Tyranids: Tyranid Prime With Lash Whip
Warhammer 40000: Tyranids: Tyranid Prime With Lash Whip
  • Focus on melee combat sets this box apart.
  • Pairs well with other Horus Heresy kits.
  • Great value for building a core assault force.

The Warhammer The Horus Heresy: Siege Assault Battle Group is an excellent investment for any Warhammer 30k player. With its versatile build options, dynamic models, and focus on close combat, it offers both hobbyists and gamers a wealth of content. If you're ready to lead your Legiones Astartes into the meat grinder, this box is a must-have.

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