I read all your books set prior to the age of gunpowder, I always thought the era of muzzle loaders represented the lowest point of stupid infantry tactics. Why else would the french be so good at it? But after finally reading the Sharpe novels I have a better understanding and appreciation for the tactics used. I have tried to find battles where a british rifle regiment encountered 1st United States Rifle Regiment armed with1803 harpers ferry model with no success. Also do you know of other non british or american elite rifle units of the time.
I know we are not supposed to send book ideas but these are very broad and not my ideas, i just want to put my vote in for these settings.
A saxon in the varangian guard after the norman conquest. It’s been done before but I think you would do it best
Thomas going to Italy with the Hellequin to fight as a condottieri
Dan