Stumbled onto this series of youtube videos on the history of WW1 small arms, produced by "C & Rsenal" (here in the USA, weapons of a certain age (50+ years old) are eligble to be bought and sold with a Curios & Relics Federal Firearms License, commonly called a C&R license or FFL03). I've only watched two so far, but they've been pretty well done. Looks like there are at least 50(?) so far.
https://www.youtube.com/playlist?list=PLJvsSlrbdhn5v8AuvAZuOYJ5BgEEoDdqm
The first episode is on the Lebel.
https://www.youtube.com/playlist?list=PLJvsSlrbdhn5v8AuvAZuOYJ5BgEEoDdqm
The first episode is on the Lebel.