Amputations during the Great War

During the Great War, many soldiers lost limbs in the fighting. Magical healing was historically not difficult to access, but the supply is limited. During the Great War, both armies were forced to rely on mundane healing for all but the most critical of wounds. Such healing methods were not very sophisticated at the start of the war, as magical healing is substantially less complex, but developed significantly over the course of the war. As such, a severe wound to the leg or arm would often result in the loss of that limb.
However, this led to a significant morale problem. As the number of veterans returning from the war with peg legs and missing arms increased, volunteers willing to join the war decreased. (While conscription is an option for front line troops, elite positions like the Magicorps require volunteers, as they tend to be more enthusiastic than conscripts.)  As a result, research began on developing a more sophisticated solution to amputation.

Arcanomechanical Prostheses

The solution that was eventually developed in Kinilan is a combination of mechanical device and arcane enchantment. The body of the device can be made by any competent blacksmith, saving a great deal of time for specialists to focus on the inner mechanical components and the runic engines that power and control them. Additionally, the modular nature of the design makes the fitting process considerably simpler than it was for the early prototypes. The runic engine powering the prosthesis is capable of being attuned to the user's mind, which allows them to move the prosthesis as easily as they do their original limb with practice, and is powered by body heat.
While people who lave lost limbs in the war will always bear those scars, these new prostheses allow them to return to their lives without being hampered by their wounds.