Beer and Pretzels Space Marines offers rules and a number of scenarios.
rules
You Can Only See The Woods For The Trees French and Indian War Rules
You Can Only See The Woods is a set of free wargames rules for miniatures games set in the French and Indian War.
In The Jungle The Mighty Jungle The Aztec Sleeps With Gold Tonight
In the Jungle is an interesting set of rules for conquistador vs aztec games. It’s played on a gridded board and is supposed to simulate a group of “lost” conquistadors trying to find their way to a temple without falling victim to sacrifice.
French and Indian War Skirmish Rules – MAWS
Here are a basic set of free wargames rules for skirmishes set in the French and Indian War.
God Will Know His Own: Rules For Knight and Crossbow era 1096-1590 (or 1789)
God Will Know His Own is a set of free wargames rules for “Knight and Crossbow era Wargame Rules 1096-1590(or 1789) then into the horse and Musket era.”