I thought while investigating warfare in the age of steam it might be worth looking at the reenactors of the Crimean war. Check out the King's Hussars site for images of the anniversary event in the Crimea celebrating the Charge of the Light Brigade.
19th foot - British redcoats of the period
In the US - group recreating British troops.
The Diehards have a Crimean section. Recreating the 55th and 77th.