Trench

This article is considered accurate for the current version (1.60) of Foxhole.

“	A dugout that's used for cover and as passageways between Bunkers. Connects to other Trenches and Bunkers.	„
	— In-game description

ATrench is a player-made upgradable structure that is dug in the ground with a Shovel and serves as a defensive position for soldiers. There are two trench variants: Trench Connector and Trench Emplacement.

Construction

A Tier 1 Trench is dug with a Shovel.

It can be connected to Bunkers and other trenches to build longer pathways. Trenches can either join up on their ends or in their middle. During placement the trench snaps automatically to existing trenches or bunkers, hold Shift to disable this.

It cannot be built on steep slopes, Beaches, ice, or paved areas. It also can't be built on Roads or Railway Tracks, unlike Trench Connectors.

Tier 2

It can be upgraded to Tier 2 with a Hammer and 50 Basic Materials.

Tier 3

A Tier 2 Trench can be upgraded to Tier 3 with a Hammer and 10 Concrete Materials if it is connected (by bunkers and trenches) to a Bunker Base with the Concrete Structures upgrade.

The concrete must dry off for 24 hours, however small modifications can be added immediately. The duration increases during Snow Storms and Rain Storms depending on their intensity (up to double with highest intensity).

While very sturdy when dry, it is extra vulnerable while wet. The vulnerability depends on how wet the concrete is and functions as a damage multiplier. Wet concrete that's just been placed has a x10 damage multiplier compared to dry concrete. After 8 hours the damage multiplier is roughly x3, and x2 after 12 hours.

Modifications

Trenches can be upgraded with several small modifications simultaneously via the structure's upgrade menu. After selecting an option your character will do a short animation (if you have the required materials) and the modification will appear, no hammering required. Modifications can be removed by right clicking on the upgrade option.


Name	Description	Cost	Removal
Barbed Wire	Slows the enemy infantry attempting to invade this Trench. Each Barbed Wire covers only third the length of the trench on the long side.	1 x	20 x
Sandbags	A defensive barrier that hinders enemy movement and provides cover during combat. Each Sandbags covers only third the length of the trench on the long side. Soldiers inside a trench cannot shoot over sandbags and cannot exit from a side that has sandbags.	1 x	20 x
Bridge	Allows vehicles to cross over this Trench.	1 x	20 x
Stairs	Provides easy access into and out of this Trench.	30 x	15 x
Pipe	Provides power connections from Engine Rooms to Bunkers.	30 x	15 x
Trench Roof	Provides cover against enemies that have entered this Bunker. Only available at Tier 3.	200 x	unremovable

Reservation

The original builder can reserve it for a Squad for 52 hours in the upgrade menu to prevent non-members from modifying it, upgrading it, or attaching structures to it. The reservation can be refreshed by any squad member. If the reservation expires, the structure can never be reserved again.

Note that a trench not connected to a Bunker Base can be modified by the enemy even if reserved. Inversely, the enemy can't modify an unreserved trench if it's connected to a bunker base (up to a maximum range of 40 Trench/Bunker pieces).

Demolition

The original builder, and squad members if reserved, can instantly demolish it if it was built less than 3 hours ago. The materials used in the construction and upgrades are refunded and dropped under the player. Trench blueprints can also be demolished by the builder if under 3 hours old.

Fill In

At Tier 1, the trench can be filled in with a Shovel, using a button in its upgrade menu, to remove it and restore the landscape around it. The trench must not have any modifications installed. It creates a blueprint over the trench which must be dug with a shovel. A Tier 1 Trench husk can also be filled in in the same manner.

At Tier 2 filling in requires Basic Materials and an Advanced Construction Vehicle. A Tier 2 Trench husk can also be filled in in the same manner.

Tier 3 Trenches cannot be filled in.

Reconstruction

When destroyed, Trenches leave a destroyed version of themselves, (a husk). They can be rebuilt with the same tool (in Upgrade Mode) and materials used to build the Tier they were on. All previously installed modifications are kept and don't need to be reinstalled.

Use

Defensive Position

It offers great cover and good firing positions for infantry. It is particularly difficult to hit a soldier in a trench with small arms. Trenches are especially useful when linked together in a network to give mobility to the soldiers. It serves to protect infantry against Artillery. It also slowly warms up infantry in it during Snow Storms.

If the "Bridge" modification is not installed, only the Tanks (except Tankettes and Scout Tanks) and the Colonial Heavy-Duty Truck can cross a trench, every other vehicle hits an invisible wall.

Trenches are neutral structures by default, if an enemy takes your trench, they can use it against you. For this reason care must be taken when digging trenches to avoid accidentally aiding the enemy and hampering one's own team. Both teams are able to upgrade or modify trenches unless they are connected to a Bunker Base, which prevents enemies from adding or removing modifications.

When destroyed, the husk it leaves can still be used by soldiers to hide inside it by crouching but it offers worse cover than a normal trench. Unlike normal trenches, all vehicles can drive over trench husks.

Network Connection

The Base Upgrades unlocked by a Bunker Base spread through and apply to all connected Trench types and Bunkers, up to a maximum range of 40 pieces. Trench husks also spread Base upgrades.

Resistance

It is very resistant to all damage types except Demolition. It is especially good at withstanding artillery. Tier 2 and 3 gives additional health. Tier 3 Trenches take more damage while their concrete is wet.

Trench husks have the same health and resistance as their corresponding tier but its decay is faster and cannot be prevented.

Gallery

Tier 2 Bunkers and Trenches used in combination
A Trench Blueprint, showing how far away it is from the nearest supply source
Various upgrades: (in order) Tier 1 Garrison, Tier 2 Machinegun, Tier 3 AT, Engine room; Firing Ports, Doorway, Treches with Barbed Wire, a Trench Bridge, and Pipes
A Tier 3 Trench with a Trench Roof
Two trench connectors joined together by destroying one of the original parent trenches
The "blue print" of the Tier 1 trench connector
Trench Stairs
The look of Trench, Trench Emplacement, Trench Connector, Bunker, and Bunker Corner at each Tier and when destroyed.
Trench upgrade and upgrade menu

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