The La Bataille game series are games simulating grand tactical Napoleonic combat. The games are based on historical battles, have detailed Orders of Battles, and can range from small (the space of a coffee table) to "monster game" size (4 or more full maps.) They use the battalion as the primary unit size and 125 yards per hexagon. Units are measured in steps, each step being 100 infantry, 50 cavalry or 1 gun.
Famed game designer Richard H. Berg credits Laurence A. Groves' La Bataille de la Moscowa as being the first "monster game." This large 4 map game made its debut at the 1975 Origins game convention.
From the Clash of Arms Games' website:
"In 1975 Larry Groves and what was then known as Martial Enterprises won the Charles Roberts award, Best Amateur Game, for their release of La Bataille de la Moscowa. Next, in 1977, a rechristened Marshal Enterprises released La Bataille D' Auerstoedt refining the rules. Then in 1984 Clash of Arms Games acquired the series; polishing the rules yet again with a third edition in 1990."
La Bataille series is based on a system designed by Larry Groves, Dennis Spors, Monte Mattson and James Soto. It is one of the longest running series in wargame history. They (The Household) continue to publish as Marshal Enterprises releasing at least a game a year since 2011.
Website endorsed by Clash of Arms Games: http://labataille.us
Website by Marshal Enterprises: http://labataille.me