Orks and Dwarves in a WWI setting? Sure. Here’s a set of fantasy WWI Rules.
Rules: Fantasy
Cult of Ulric Warhammer Army
Cult of Ulric is a new Warhammer Fantasy fan-made army sourcebook. It’s very professionally done.
SAGA Rohan Battleboard
A SAGA Battleboard for the Riders of Rohan from the Lord of the Rings
SAGA Gondor Battleboard
Tabletop Deutschland blog has a nicely done battleboard for Lord of the Rings Gondor forces.