If you own a skirmish version of FiveCore already (and if not, grab the retro collection, its Pay What You Want for a reason), you can go grab the Alpha draft of the platoon level rules here
link
This will enable games of 30-40 figures per side with multiple vehicles and will, when finished, allow 20th century, modern and scifi battles.
The plan is to also include a points system for the first time ever in FiveCore history :)
A few notes on the Alpha rules:
They are very brief (4 pages).
They ONLY cover CHANGES to the normal skirmish mechanics. At the moment, anything not explicitly changed is remaining the same.
For the Alpha version, you're expected to fill in the blanks yourself.
It won't cost anything but as mentioned above, you NEED a copy of a FiveCore based skirmish game already to make any use out of it.
goes back to the year 2000!