This is a one-page set of rules for American Civil war naval and river battles.
Rules: American Civil War
Iron Brigade Civil War Rules
Iron Brigade is Mike Willegal’s third edition of his Civil War rules. It’s designed on a 1/20 scale.
American Civil War Riverine Actions
American Civil War Riverine Actions is a set of free wargames rules for ironclads, tin-clads, cotton-clads and all the fun and unique ships that plied the rivers of the United States during the ACW.
Large Scale Civil War Battle Rules
Large Scale Civil War Battles is a set of free wargames rules where one base=1000 men and an inch=100 yards.
The Battle of Blackburn’s Ford
The Battle of Blackburn’s Ford is an introduction to the Combat Command American Civil War Rules. The pdf also includes counters if you don’t have figures.