on 8 November 2016. Last revised by 
Rules for Tabletop Wargames Set in the Tricorn Era Using 15mm Size Model Soldiers
Editions
Old Dessauer 15mm: 18th Century Wargame Rules
An alternate edition dated 2010 is archived here (2-page PDF).
I have recently been on a simplification crusade, and here is the result. Each of these sets is two pages long and has the same turn sequence and basic mechanics. The troop scales and details however emphasize what I believe are the important differences between the periods they represent. I based the combat mechanics loosely on the WRG 1685-1845 rules: You add up combat points for units in melee and the chance to hit the enemy depends on whether you have more, the same, or fewer points.
– designer's website
Old Dessauer 25mm V2
Another alternate edition dated 2010 is archived here (4-page PDF).
This is a 25mm version of Old Dessauer… The Old Dessauer 25mm rules have more detailed game mechanics than the 15mm version. I intend them for games with larger units but smaller forces. They feature variable retreat moves, rout, and pursuit, for example.
– designer's website