Stormed At With Shot and Shell is a set of free miniatures rules for playing games set in the Crimean War. They’re designed for 15mm figures.
Natholeon’s Empires has a set of free wargames rules for the Crimean War.
Charge of the Light Brigade is a set of free wargames rules in which each of five players controls a regiment of the Light Brigade in their fated charge.
Days of Empire is a set of free wargames rules for games set in the Crimean War.
Charge of the Light Brigade is a set of free wargames rules by David Raybin for mid-19th century warfare. Raybin writes:
The rules (which have evolved over the last twenty years or so) were originally designed for conventions where players expected to be able to learn a game in under fifteen minutes and to start throwing dice almost immediately. Obviously, then, playability and fun are central to the rules. There is no strict ground or time scale. It is merely representational at best which, in truth, is all one can say about any wargame.