The Napoleonic FPS Holdfast: Nations at War has just released a free DLC that turns the game into a ww1 FPS.
I am going to give it a try. Why not.
Edit: Back from giving it a try. Not a fan of the aiming mechanics. Even a right click does not get you into a position aiming down the iron sights on your screen. It seems like you are firing from your hip. The animation of course looks normal. I tried on an American server and the community is a lot of fun but the lag was a real problem for me. So unless some more local servers open up. I will probably not persist with this DLC.
(https://i.imgur.com/4w2Hmrx.png)
(https://i.imgur.com/PHqBbow.png)
(https://i.imgur.com/dieemss.png)
(https://i.imgur.com/TU99BQ0.png)
History Guy Gaming did a show on this yesterday. https://youtu.be/_U4Oq1I2FcA
Cool only if I still get to play a musician. -Picks up flute to play a rousing tune as we go over the top-
(Kidding; it's all cool)