Historical European Martial Arts (HEMA)
HEMA is the modern reconstruction of martial arts in Europe from around 1300 to 1800. People in the HEMA community study surviving manuals written during that period, translate them, interpret the teachings and techniques, then try it out on each other!
Here are some videos to watch to help explain HEMA.
The first is a short 5 minute video from the New York Times.
The second is an hour and half long documentary funded by the HEMA Alliance, which goes into depth about HEMA as a scholarly pursuit, as a new and fast growing sport with an active tournament scene, and as an international community practitioners.