Engineering

The character is trained as a builder of both great and small things. Engineers can prepare plans for everything from simple machines (catapults. river locks, grist mills) to large buildings (fortresses, dams). A proficiency check is required only when designing something particularly complicated or unusual. An engineer must still find talented workmen to carry out his plan, but he is trained to supervise and manage their work.
An engineer is also familiar with the principles of siegecraft and can detect flaws in the defenses of a castle or similar construction. He knows how to construct and use siege weapons and machines, such as catapults, rams, and screws.