In the late twelfth century, a Syrian military scholar named Murda al-Tarsusi composed a detailed illustrated manual on arms and armor and dedicated it to Salah ad-Din. The work, known from later manuscript copies, is titled Tabṣirat arbāb al-albab fī kayfiyyat al-najāt fī al-ḥurūb (“Instruction for the Intelligent on How to Escape in War”). It stands out as one of the most technically minded military treatises of its era, blending practical engineering with the artistic traditions of the Islamic Golden Age.

Murda al-Tarsusi was not a general but a specialist in weapons and armor construction. His treatise reflects the concerns of a craftsman-engineer: how to build, maintain, and improve battlefield equipment. The introduction of the manuscript states that the work was prepared for Salah ad-Din, likely as a formal submission to the Ayyubid court. This kind of exchange was common in the period. Scholars, physicians, and technical experts often presented treatises to rulers as demonstrations of expertise or as contributions to statecraft. Salah ad-Din’s court in Damascus and Cairo was a center of military reorganization, making such a manual both timely and useful.

The treatise includes precise drawings of helmets, shields, lamellar armor, and mail, along with instructions for reinforcing weak points and adapting equipment to different terrains. One of its most striking illustrations shows a crossbow concealed behind a shield, with a trigger mechanism hidden in the grip. Whether this hybrid device was ever constructed is uncertain, but its presence in the manuscript reveals the experimental spirit of the era. Murda al-Tarsusi was willing to explore unconventional solutions to battlefield problems, and Salah ad-Din’s court was a place where such innovation could find an audience.

Other sections of the treatise focus on more conventional gear: riveted mail shirts, helmets with nasal guards, and shields designed for both cavalry and infantry. The diagrams are careful and methodical, showing the influence of the broader scientific culture of the Islamic Golden Age. Measurements are consistent, and the explanations emphasize function over ornament.

Although no record survives of Salah ad-Din’s personal reaction to the treatise, its dedication and technical depth suggest it was meant to support the Ayyubid military reforms underway during his campaigns. It offers a rare window into the practical knowledge that underpinned medieval warfare in the Near East.

Today, Murda al-Tarsusi’s work is valued for preserving a visual and technical record of twelfth-century arms and armor. Museums and historians use it to reconstruct lost techniques and to understand the equipment used in Salah ad-Din’s armies. Even its more imaginative designs highlight the creativity and problem-solving that shaped medieval military technology.