Here’a a new word for me: Sangars. It refers to defensive positions made from loose rock. And here’s a tutorial on making the sangars.
modeling
Modeling Explosions
The cotton ball explosion marker is a staple of miniature wargaming. The Miniatures and Terrain blog has a fantastic looking version.
Modeling Wooden Road Obstacles
The Miniatures and Terrain Blog has this tutorial on modeling wooden road obstacles.
Modeling Wood Stacks
Here’s a photo tutorial on making some nice looking model wood stacks. Useful stuff for battlefields across the centuries.