Fortress-City Defenders: the dig-in and counter-charge formation (AoS 4th Ed)
A defensive formation built around holding ground, fortifying positions, and punishing enemies who charge in.
SprueSentry strategy commentary for Age of Sigmar 4th edition, not official rules. Games Workshop updates points and rules regularly — always confirm against the current official rules and your latest dataslate before a game.
The fortress archetype (sometimes styled as a Bulwark or Castelite-style formation) makes Cities play like a mobile stronghold — dug-in infantry and guns that are hard to shift and dangerous to assault. This is original AoS 4th-edition commentary, not official rules; exact names and bonuses vary between the 2024 Faction Pack and the current Battletome, so verify the live wording.
What the formation does
It rewards a defensive, fortified posture — commonly by letting units dig in, reducing damage taken early or in your own territory, and/or punishing enemies that charge your line (for example with free defensive reactions). The idea is to make your battleline a wall the enemy breaks on. Specific effects vary by iteration; confirm against the current battletome/faction pack.
Who it suits
Players who want to play a patient, attritional game — holding key objectives, weathering the first assault, and counter-punching. It suits infantry-and-gun lists and missions where controlling your own half of the board is decisive.
Key units
- Freeguild Steelhelms — shield infantry that form the fortified line.
- Freeguild Fusiliers — guns that thrive shooting from a dug-in position, including into chargers.
- Ironweld Great Cannon / Cogfort — the 'gatehouse and towers' of your mobile fortress.
- Freeguild Marshal / Tahlia Vedra — leaders to hold the line and buff the defence.
When to pick it
Pick it when you expect to be charged and want to make that a bad idea for your opponent, on hold-your-ground missions, or into aggressive melee armies. It's less ideal when the mission forces you to leave your fortress and chase distant objectives.
Common questions
Is this a purely passive, sit-back formation?
Not quite — it's about winning the exchange when the enemy comes to you, then counter-punching. You still need to contest objectives, so pair the dug-in core with a mobile element. Confirm the exact defensive bonuses in the current battletome.
How does it compare to the gunline formation?
The gunline maximises ranged output; the fortress formation maximises durability and counter-charge value. If your worry is surviving the assault, take the fortress; if it's deleting targets at range, take the gunline.
- Cities of Sigmar – Faction Rules (Warhammer Community, official) · 2024
- Cities of Sigmar Faction Pack (official PDF, GW) · 2024-09
- Tabletop Battles Reviews: Cities of Sigmar Fourth Edition Battletome (Goonhammer) · 2026
- Cities of Sigmar (Wahapedia, AoS 4th edition rules index) · 2026
- Cities of Sigmar Battletome Review 2026 (Sprues & Brews) · 2026-05-16
Written by SprueSentry with SprueSentry editorial (hand-authored, research-grounded), grounded in the cited sources — original commentary, not Games Workshop rules text.