Rail Network is a 
Chaos Dwarfs infrastructure building introduced in Total War: Warhammer III with the Forge of the Chaos Dwarfs DLC.
Chaos Dwarfs are mainly consumed with hatred, greed and cruelty, but getting things done is also high on their list of concerns; the railway helps them to achieve their goals.
Effects[]
Control: +2 (all adjacent provinces)- Control: +5
- Campaign movement range: +20% (all armies in local province)
- Effect unlocked when technology "Industrial Security" researched:
- Campaign movement range: +10% (all armies in local province)
- Upkeep: -5% (all armies in local province)
Building Chain[]
- Patrol Routes
- Tower Roads
- Rail Network
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