Bob Corderey offers Red Flags and Iron Crosses, a set of free wargames rules for playing World War II games in 20mm. The rules focus on small actions between Soviet and German forces.
WWII
MG-42 Two Hour Wargames Introduction
MG-42 is a set of free wargames rules designed as an introduction to Two Hour Wargames’ Reaction system.
East Front Sniper Game
In East Front Sniper, each player acts as a World War II Soviet Sniper, competing to rack up the most kills.
Warhammer World War 2
Warhammer has been adapted to every period I can think of. Here’s a version called Warhammer Panzer Battles
Painting a World War II Marine
The Pacific Theatre in World War II is a relatively neglected period in miniature wargaming. I think that it has a lot to do with the lack of sexy things like tanks and SS uniforms. But it shouldn’t be that way. It has a lot of colorful troop types (think Ghurkas), and the matchless US Marine Corps.