Some 28mm sci-fi vehicles:
The vehicles at the back are some old school Stargrunt 25mm sci-fi vehicles from Ground Zero Games bought at Eureka Miniatures 5+ years ago. The one on the left is a Rommel light tank, the one on the right a Gauntlet APC. The two tanks in the front are 1/72 Jaguarundi (WWII tank that never got off the drawing board) from Pegasus Hobbies bought when a local hobby store was closing (from memory for around AU$6 for the two).
I have some Games Workshop Imperial Guard walkers and guardsmen I will add to this force. It's not designed for any particular game - I just like the miniatures.