Dear Bernard
One of your fellow posters asked about the Battle of Verneuil. There has been a recent book on that battle that maybe of interest to read “Verneuil 1424: The Second Agincourt – The Battle of the Three Kingdoms” by Richard Wadge
https://www.amazon.co.uk/Verneuil-1424-Second-Agincourt-Kingdoms/dp/0750961139
Regards
Geraint