Castles, Cogs & Chevauchées

Castles, Cogs & Chevauchées is a set of campaign style rules for skirmish level combat using the Knights and Knaves skirmish rules.

Link

Knights and Knaves rules at the same link

Atteint! Jousting Rules

Atteint! is a set of free games rules for medieval jousting.

Link.

FUBAR Medieval Rules

Following up on their FUBAR modern rules, Gawd ‘elp Us Games offers FUBAR Medievals.

Ancient and Medieval Painting Guide

Here’s a nice — if not overly deep — painting guide to ancient and medieval armies.

Late Medieval Skirmish Rules

The Late Medieval Skirmish Rules is a set of free wargames rules for large scale figures on an actual dining room table (with salt shakers, etc.)

Link