4★ Fortified Battleships
Research · COMBAT
Increases base Armor for all Grade 4+ Battleships.
- Tree
- COMBAT
- Requires
- Ops 43 · Reactive Survey Defense 1 · R&D DEPARTMENT 43
- Requires at level 10
- Ops 50
Research · COMBAT
Increases base Armor for all Grade 4+ Battleships.