Here are some rules for using the Dirtside II system to recreate battles from Heinlein’s Starship Troopers.
Miniatures Rules
Star Trek Counters
The Heavy Metal Wargaming site has some counters for use in starship games set in the Star Trek: The Next Generation universe.
MiG Madness – Fast Play Rules For Jets
Wargamer and Teacher Matt Fritz has written MiG Madness, a set of free wargames rules for playing air combat in the Korean War.
Fistfull of Tripods Rules
Ty Beard’s Fistfull of Tripods is a set of free wargames rules for fighting battles from H.G. Wells’ War of the Worlds. It is a tactical level game, where one stand is a platoon. I’ts designed for 1/300 (6mm) scale figures.
NOTE: This is an updated URL. The old one was no longer working.
Ironbow rules
From The Perfect Captain, Ironbow is one of their series of beautifully illustrated wargames where the graphics are not just eyecandy, but integrated into the rules and play of the game. Truly innovative stuff. Ironbow covers the crusades era from 1096 to 1192.