If You Tolerate This is a set of free wargames rules for fighting divisional level engagements set in the Spanish Civil War. It is designed for 15mm figures and played on a grid or hex board.
15mm
Return To The River Don
Return To The River Don is a set of free wargames rules for 15mm miniatures battles set in the Russian Civil War.
Gladius and Pilum Ancients Rules
Gladius and Pilum is a set of free wargames rules for battles set in the 500BC to 500AD era. They’re designed for 15mm miniatures, with one figure equaling 50 men.
Modeling 15mm Villages
Small World Productions has a photo essay on making a nice looking 15mm village.
Making 15mm Barbed Wire
The League of Ordinary Gamers has a quick and easy idea for making some good looking 15mm barbed wire.