Nice to see one of my favourite rule sets of all time, Dirtside II available for free download.
I played Dirtside quite a bit in the 1990s and even put on a display game for it at Salute one year. I much preferred it at the time to the Epic rules which were around. Though when Epic40000 was released I did start playing those rules for a while.
Dirtside II is a rules system for playing combined-arms ground combat with miniatures in a science-fictions setting.
They were first published in 1993 by Ground Zero Games.
They are now available as free download from the GZG website.
Here is an article I wrote for Dirtside.