[Suzerain of Sheol]

Originally Posted by Lawtan

Another would be weapons/weapon design (Rennaisance, Dark Age, prehistory, classical, Native American, 17th century, 18th century, modern, and future to name a few)

This is a good place to start for all things to do with armed combat. http://www.thearma.org/essays.htm

Alternatively, you can ask me. :P