# Another Brick In The Wall

**Entity Type:** Skill

## Properties

| Field | Value |
|-------|-------|
| Category | Military |
| Skill Type | Repeatable Research |
| Knowledge Cost | 1,500,000 |

## Effects

| Effect Type | Target | Value |
|------------|--------|-------|
| Hitpoints | Walls | +5% |

## Description

Increases the defensive strength of your Walls.

Another Brick In The Wall is a **Repeatable Research** skill. These are the most expensive research options and are found at the very end of the skill tree. What makes them special is that they can be researched again and again. However, their costs and thus the required research time increase drastically with each level. The first research costs **1.5 million Knowledge**.

## Requirements

This skill is located deep in the Military branch of the skill tree and requires reaching the end-game research nodes.

## Related Skills

Other Military skills related to defensive structures:

- Brick By Brick - Construction improvement
- Stone Walls - Advanced wall type
- Rammed Earth - Foundation type
- Bargain Palisades - Cost-effective walls
- Sturdy Construction - Building durability
- Tower Ballistae - Tower weaponry
- Tower Contiguity - Tower placement bonus

## See Also

- [Military](./military.md) - Overview of all Military skills
- [Buildings](../buildings/_index.md) - Defensive structures

## Source

- [anno.land](https://anno.land/en/anno-117-skills/stein-um-stein/)
