Dave Ferris offers Panzer III, a set of free wargames rules for WIII tank battles.
War of the Red and White Wars of the Roses Rules
War of the Red and White is a set of free wargames rules for multiplayer Wars of the Roses Games.
WW2 Rules For Brigade Level Games
David Wareham offers a set of WW2 Rules For Brigade Level Games
Galleon Wargames Rules
Galleon is a set of wargames rules for naval combat in the 1400s and 1500s — the Spanish Armada period.