Le Feu Sacré covers Divisional and Corps level actions in the Napoleonic era, from 1792 to 1815, with the basic manoeuvre element a battalion and the smallest command level is Brigade. The rules have been developed over many years to give a truly representative view of the warfare of the period, with the gamer placed in the position of a Corps or Army commander.

Ideally played with figures from 6mm to 15mm, Le Feu Sacré focus on the importance of command and control on the battlefield combined with the impact of what Clausewitz calls battlefield friction. The result is a set of rules that is fast and enjoyable to play, but also captures to true feel of the period.