Bunker Base

Versioning

This article could contain outdated information that is inaccurate for the current version (1.52) of the game. It was last updated for 0.46.

Bunker Base (Tier 1)
The in-game icon for the Tier 1 Bunker Base.
Information
Map Intelligence Icon
Faction	Both
Building Type	Spawn & Storage
Build/Rebuild Tool
Cost	300
Repair Cost	300
Inventory Slots	15
Heat Radius	Inside
AI Connection Radius	80 meters
View Structure Health

Bunker Base (Tier 2)
The in-game icon for the Tier 2 Bunker Base.
Information
Map Intelligence Icon
Faction	Both
Building Type	Spawn & Storage
Build/Rebuild Tool
Cost	100
Repair Cost	100
Inventory Slots	15
Heat Radius	Inside
AI Connection Radius	80 meters
View Structure Health

Bunker Base (Tier 3)
The in-game icon for the Tier 3 Bunker Base.
Information
Map Intelligence Icon
Faction	Both
Building Type	Spawn & Storage
Build/Rebuild Tool
Cost	50
Repair Cost	200
Inventory Slots	15
Heat Radius	Inside
AI Connection Radius	80 meters
View Structure Health

A Forward Operating Base that's built directly into a Bunker network. It provides Infrastructure for nearby connected Bunker and Trench segments

Construction

The Bunker Base is built by upgrading a tier 1 bunker with a Construction Vehicle for 300 Basic Materials. The bunker must be part of a large bunker with at least 5 additional bunker pieces (any tier, any upgrade). The bunker we're upgrading must also not be adjacent to a bunker garrison. For a bunker base tier 2 and 3, the prerequisites are the same as other Forward Bases (small Garrison Facility for T2, large for T3) except that for Tier 3 the Bunker Base must also have unlocked the "Concrete" infrastructure Upgrade. Tier 2 upgrade costs 100 bmats, Tier 3 costs 50 Concrete Materials.

Bunker Base Upgrades

Bunker base Upgrades contain the same upgrades as other forward bases but also have two additional upgrades trees ("Garrison" and "Command") to unlock bunker specific upgrades. Those bunker upgrades also require Infrastructure, which is provided by building Infrastructure Modifications in Bunkers. There are two types of Infrastructure: "Garrison" and "Command", one for each upgrade tree.

Image	Name	Required Modifications	Description	Approx. Unlock Time
"Base" Tree
	Provisional Garrison		Connects the base to nearby defensive structures (80m radius). Defensive structures will deactivate if player activity (set spawn) is too low (<10).	10-75mins
	Small Garrison		Permanently connects the base to nearby defensive structures (80m radius). Prevents nearby structure decay by consuming Garrison Supplies from the stockpile. Rate of consumption is 2 per hour per structure. Required to upgrade Base to Tier 2.	8-72hrs
	Large Garrison		Prevents nearby structure decay by consuming Garrison Supplies from the stockpile. Rate of consumption is 1 per hour per structure. Required to upgrade Base to Tier 3.	2-3days
"Garrison" Tree
	Infantry Garrisons	4	Allows connected bunkers to be upgraded into Rifle Garrisons or Machine Gun Garrisons. Requires 4 "Garrison" Modifications.	?
	AT Gun Garrison	12	Allows connected bunkers to be upgraded into AT Gun Garrisons. Requires 12 "Garrison" Modifications.	5-15hrs
	Howitzer Garrison	24	Allows connected bunkers to be upgraded into Howitzer Garrisons. Requires 24 "Garrison" Modifications.	1.5-2.5days
"Command" Tree
	Observation Bunkers	6	Allows Observation Bunkers to be built in this network.
	Concrete	12	Allows construction of concrete bunkers and upgrades. Requires 12 "Command" Modifications.	24hrs
	Deployment Point	24	Allows players to deploy to this forward base from the Home Region. Requires 24 "Command" Modifications.	3days
	Advanced Bunker	40	Allows construction of Storm Cannon and Intelligence Center. Requires 40 "Command" Modifications.	3-4days

Unlock order (Assuming you are solo player)

1. Provisioal AI (5-30mins)
2. Small Garrison AI (13 hours-1day)
3. Infantry Garrisons (RG & MGG) (5-30 mins)
4. Large Garrison AI (2 days +- half)
5. ATG (1 day)
6. T1 Obs Bunkers (?)
7. T2 concrete (1 day)
8. T4 HG (2 days +- half)
9. T3 Deployment point (3 days)

Once an upgrade for a specific bunker garrison is unlocked, bunkers that are connected to the bunker base via trenches or bunkers can be modified to become that specific bunker garrison type (if they don't already have a modification installed). The maximum range of the bunker tech is 40 connected bunker/trench pieces. Once a particular bunker has been modified into a bunker garrison it won't lose its modification if its connection with the bunker base is severed, it can even still have its tier upgraded.

Tips

• Once an upgrade that required Infrastructure Modifications is unlocked, removing the infrastructure modifications won't make you lose the upgrade or the ability to build the new bunker upgrade type.