Heaumes
A Heaume, or Great Helm, is a large helmet that is worn over a chainmail coif or smaller helmet. It offers great protection, at the cost of weight, breathing, and vision. it is a type of Resource used to train certain units.
Heaumes are unlocked by the Plate armor knowledge, this knowledge coems around in Steel age.
To make 1 Heaumes you need 0.5 Leather and 1 Steel.
Units that need Heaumes to be trained