Last Z Formation Buildings Guide - Formation I-IV Bonuses
Quick Answer
Formation Buildings are the four Headquarter buildings named Formation I, Formation II, Formation III, and Formation IV. Each one buffs only its own Troop. Every upgrade level gives that Troop +1% ATK and +1% DEF.
- Upgrade Formation I first - it affects your Main Troop.
- Scale active Troops only - Formation II and III matter more when those Troops fight often.
- Formation IV is pass-gated - it appears only if ApocaAid Monthly Pass unlocks the fourth Troop.
Checked in game: each Formation Building buffs only its linked Troop.
What Formation Buildings Do
Formation Buildings are small but permanent Troop-strength upgrades in your Headquarter area.
Each Formation Building is tied to one Troop:
| Building | Affects | Bonus per level | Priority |
|---|---|---|---|
| Formation I | Main Troop | +1% ATK and +1% DEF | Highest |
| Formation II | Second Troop | +1% ATK and +1% DEF | Medium if you use it often |
| Formation III | Third Troop | +1% ATK and +1% DEF | Medium if you use it often |
| Formation IV | Fourth Troop | +1% ATK and +1% DEF | Only relevant with ApocaAid Monthly Pass |
The important rule is simple: upgrading Formation I does not buff every Troop. It buffs Formation I's Troop only. The same is true for Formation II, III, and IV.
Where to Find Them
Open your Headquarter area and look at the main wall. Formation I-IV sit around the center City Walls building: two on the left and two on the right.
Upgrade Priority
For most players, the priority is:
- Formation I
- Formation II or Formation III, depending on which extra Troop you actually use
- Formation IV only if you have ApocaAid Monthly Pass and use the fourth Troop
Formation I should come first because it affects your Main Troop. That is the Troop most players use for the highest-value fights, rallies, and progression checks.
Formation II and Formation III matter more when your second and third Troops are active parts of your account, not just idle extra marches. If you use them often, the +1% ATK and +1% DEF per level is still useful. If they rarely fight, keep Formation I ahead.
Formation IV is different because it depends on ApocaAid Monthly Pass. If you do not have the pass and the fourth Troop unlocked, do not plan upgrades around Formation IV.
Practical Upgrade Rules
- If your Main Troop is doing most of your fighting, keep Formation I ahead.
- If your second or third Troop joins meaningful fights, start bringing Formation II or III up behind Formation I.
- If extra Troops are only used for low-risk tasks, do not over-prioritize their Formation Buildings early.
- If you buy ApocaAid Monthly Pass and actively use the fourth Troop, Formation IV becomes worth including.
- If you do not use the fourth Troop, Formation IV should not affect your plan.
Formation Buildings are not usually the biggest power system on the account, but they are clean permanent stats. The value is best when the upgraded Troop is a Troop you actually use.
Common Mistakes
- Expecting every Troop to get the bonus: each Formation Building buffs only its own Troop.
- Spending on Formation IV before unlocking the fourth Troop: Formation IV matters only with ApocaAid Monthly Pass and the fourth Troop.
- Spreading upgrades evenly when only Main Troop matters: prioritize Formation I unless your other Troops are active in real fights.
FAQ
What does each Formation Building upgrade give?
Each level gives +1% ATK and +1% DEF to that specific Formation Building's Troop only.
Which Formation Building should I upgrade first?
Upgrade Formation I first for most accounts because it affects Main Troop. Upgrade Formation II, III, and IV based on how often those Troops are used.
Why can't I use Formation IV?
Formation IV is tied to the fourth Troop. The fourth Troop is unlocked by ApocaAid Monthly Pass, so Formation IV is only relevant for players with that pass active.
Do Formation Building bonuses affect all Troops?
No. Formation I affects its Troop, Formation II affects its Troop, Formation III affects its Troop, and Formation IV affects its Troop. The bonus is not global.