The Green Hell is a set of free wargame rules for colonials wargames in West Africa.
africa
Modern African Wars Free PDF From Osprey
The latest Osprey newsletter offers a link to a free download of their Modern Africa Wars Men At Arms Book.
You’ll also want to sign up for their newsletter in case they offer other freebies.
Building African Terrain
Here’s a great illustrated post on building a spectacular African savanna battle board.