There are at least two bands with the name “Folkstorm”. 1) an industrial/power electronics project from Sweden.
2) an ambient/atmospheric black metal band from The Netherlands. 1) Folkstorm is an industrial/power electronics project of Henrik Nordvargr Björkk's that existed until 2001. It has been reactivated several times after 2001; the latest album Folkmusik was released in 2005. Folkstorm mainly deals with the subject of war and political ideologies in its songs.

Read more about Folkstorm on Last.fm.