This is a classic in mid 15th century sources for the medieval tournament. Many of the ideas in here are used in various modern armored combat sports today.
The entire text and many of the photos are available online if you know where to look. The text can be found HERE at Princeton University. On that page, near the bottom, are instructions for finding the scans of the pictures at the Bibliothèque Nationale de France. I’m hoping to have some time in the upcoming days to read through this relatively short book and see what I can get out of it. Stay tuned! If you’ve got suggestions, make sure you fill out this form and let me know!