Warhammer: Chaos & Conquest: Keep 30 Warband Siege Guide

To defeat an unshielded 400M+ power Keep 30 fortress in Warhammer: Chaos & Conquest, an attacking alliance must launch a coordinated Warband composed exclusively of Tier 4 troops that match the rally leader's Champion combat specializations. A high base power rating frequently conceals millions of low-tier units that collapse quickly when hit by focused stat multipliers.

Power Rating vs. Combat Attributes

A fortress displaying 400M or more in power is not automatically secure. Total power scales heavily with sheer troop volume, meaning high-power bases often hold millions of Tier 1, Tier 2, and Tier 3 auxiliary units alongside core Tier 4 formations.

Combat calculations in Warhammer: Chaos & Conquest multiply base unit statistics by percentage buffs rather than resolving flat power values. When an attacking alliance launches a 500M+ Warband, the rally leader brings high-tier Champion equipment, completed skill trees, and specialized combat rituals. These investments provide hundreds of percent in offensive bonuses, armor piercing, and morale damage.

Low-tier frontline units have low base defense and health. When elite Tier 4 attacking units strike these lines, the stat disparity allows the Warband to destroy auxiliary troops with minimal friction. These lower-tier troops fail to absorb incoming strikes effectively, driving up defender losses in the opening combat rounds.

Rally Composition and Alliance Roles

Warband effectiveness relies on matching joining troops to the rally leader's specific equipment and mastery buffs. In Warhammer: Chaos & Conquest, the rally leader's Champion stats, gear bonuses, and ritual multipliers apply across all participating alliance units.

If the rally leader specializes in Monstrous units or Chaos Undivided Cavalry, alliance members must send only those matching unit types. Sending mismatched factions or unbuffed troop types—known as a rainbow fill—weakens the strike because those auxiliary units gain no benefit from the leader's gear sets.

Warband Role	Primary Responsibility	Critical Requirements
Rally Leader	Sets march targets and combat specializations	Maxed Warband Hall capacity, specialized Champion gear, and aura buffs
Rally Joiners	Provide primary striking power	Pure Tier 4 units matching the leader's unit and faction specialization
Support Fillers	Cap the Warband march ceiling	Proper timing to reach full capacity before the launch countdown expires

Apothecary Limits and Permanent Losses

Striking an unshielded fortress inflicts permanent troop deaths by instantly exceeding the defender's Apothecary capacity.

While a 426M power fortress houses millions of standing troops, hospital capacity caps out in the low hundreds of thousands, even with dedicated hospital expansion rituals and gear. In standard combat, wounded troops enter the Apothecary up to this threshold. When hit by a 550M Warband, incoming casualties exceed available beds immediately.

Any casualty sustained beyond hospital capacity dies permanently. In Keep 30 engagements, a single Warband hit can eliminate 50 to 100 million power in dead troops. In contrast, the attacking alliance divides its casualties across all rally participants, keeping individual losses within personal hospital limits where they can be recovered.

Evaluating the Battle Report

Before launching a follow-up attack, the rally leader must inspect the initial combat report to determine whether the target's core defense broke:

Check Defender Casualty Tiers: Determine whether the strike eliminated core Tier 4 units or merely cleared lower-tier meat shields. If Tier 4 troops remain largely intact, a second rally will face denser damage mitigation.
Examine Apothecary Status: High permanent kills confirm that the defender's hospital capacity breached, signaling reduced combat resistance for subsequent hits.
Monitor Reinforcements and Buffs: An active defender can request high-tier alliance reinforcements, pop defensive boosts, or activate a Peace Shield. If matching enemy reinforcements arrive while the Warband resets, disengage to avoid attacking a newly fortified garrison.

Defending Against Warband Strikes

An active Peace Shield remains the only guaranteed defense against a 500M+ Warband. Passive offline defense carries severe economic risk, as an unshielded garrison cannot adjust to Champion debuffs, incoming troop counters, or siege bonuses.

If caught without a shield, take immediate defensive action:

Call for Fast Reinforcements: Request that alliance members send their highest-tier units matching your fortress's defensive attribute specialization.
Shelter Your Champion: Protect critical Champion gear and hero stats from capture or defeat.
Ghost-Rally or Shield: If reinforcements cannot arrive before the rally timer expires, ghost-rally remaining forces on an empty camp to remove them from harm, or activate a Peace Shield before impact.