This page cannot be viewed in frames

Go to page

If you have found a spelling error, please, notify us by selecting that text and pressing Ctrl+Enter.

Roman engineers

This post is also available in: Polish (polski)

Reconstruction of the bridge in Arelate
Reconstruction of the bridge in Arelate

Each legion had a squad of engineers, sappers, and various kinds of craftsmen called fabri. The studies indicate different numbers of these departments. Historian Paweł Rochala (“Las Teutoburski 9 rok n.e”) states that there were 120-160 of them in two centuries. In turn, Andrzej Grackowski (“The Roman Army in the Decline of the Republic: organization, weapons, tactics”) gives the number of about 100 people without specifying the number of centuries. There you can also find a thesis that separate fabri units ceased to exist after Marius’ reforms, and qualified legionaries were to be assigned to individual infantry units. However, while I support this author’s views on numbers, I doubt whether the engineering divisions as such have been liquidated.

The commander of fabri was prefectus fabrum. He was a man from an equine environment. He must have been a man with a great deal of knowledge in the exact sciences. One of the well-known prefecti fabrorum from the period of the end of the republic was Marcus Vitruvius Pollio – the author of “On the architecture of the ten books”. The commanders of the engineering troops belonged to the strict staff of the legion commander.

It should be noted that since the reforms of Marius, each legionary carried tools for engineering works, which increased the “engineering strength” of the legion, because legionaries could thus perform most of the fortification, siege and construction works, requiring only professional supervision.

The engineers were also responsible for the construction of the bridges. The army built three types of bridges for its needs. If the current of the river was not too fast, boats were used to cross the current. The second type is a bridge built on twenty supports made of stone blocks, the upper part of the bridge was made of wood. The third way to build was to build a bridge entirely of stone.

IMPERIUM ROMANUM needs your support!

If you like the content that I collect on the website and that I share on social media channels I will be grateful for the support. Even the smallest amounts will allow me to pay for further corrections, improvements on the site and pay the server.



Find out more!

Check your curiosity and learn something new about the ancient world of the Romans. By clicking on the link below, you will be redirected to a random entry.

Random curiosity

Random curiosity

Discover secrets of ancient Rome!

If you want to be up to date with newest articles on website and discoveries from the world of ancient Rome, subscribe to the newsletter, which is sent each Saturday.

Subscribe to newsletter!

Subscribe to newsletter

Spelling error report

The following text will be sent to our editors: