All I know about the Crimean War is what I picked up in ‘Flashman at the Charge’ so all I will do is make a rules recommendation! (Actually you pick up quite a lot from George Macdonald Fraser’s books, and of course as a WW2 vet he’d been there and done that as far as writing about combat and warfare is concerned…)
Black Powder is written for a 1:20 figure scale ratio, and of course has a specific section on the Crimea, including the Cry Me a River scenario – oh dear! I heartily recommend Black Powder for a good balance between playability and authenticity, and of course you can add as much or as little period and scenario specific additional rules and troop stats as you please….
All the best with your new departure!
'Blessed are the peacekeepers, for they shall need to be well 'ard'