Firepower is a set of free wargames rules for naval battles. The rules cover the period 1900 – 1945.
World War II Battalion To Corps Level Rules
Alienstar offers a set of World War II rules for battalion to Corps level games.
Roses Of The North Wars of the Roses Skirmish Game
Roses of the North is a set of free wargames rules for Wars of the Roses skirmishes.
Wars of the Roses Skirmish Rules
The CoolGuyOrDweeb site offers a set of free wargames rules for Wars of the Roses skirmishes.
The Wars of the Roses have long been on my “periods to do” list.
Under The Shade Of The Trees ACW Rules
Under The Shade Of The Trees is a set of free wargames rules for the American Civil War. They’re designed as “fast play” and suggest using standard Johnny Reb or Fire and Fury basing.