A Crazy Idea!

[Imp]

What forces would represent them, Spain?
I had a similar idea using South Africa the premise being resources are running out & it supplies the majority of the rare stuff. Russia or China decide they want some of these before they are gone & convince an African country it would be a good idea say Angola. The likes of Libya or other North African country is a bit of a stretch due to the distance & think outguns SA quite badly.
So starts as Angola invading South Africa, USMC is dispatched to assist as they want the resources to & it all escalates. SA get USMC air support then must hold a port while Marines land & can now enter the war, Communists become more than advisors capture airfields & come in that way. Steadily heavier equipment becomes available & of course everybody else wants the resources to.
The idea was the forces get steadily better possibly the battles bigger as raids to start with & supplies targets. Ports airbases mines etc plus the normal stuff on the way.
Angola would probably need a bit more than advisors from the start to make it as far as a SA port mind no chance of surprise but from memory SA neigbours would have an even tougher time.
As DD said though finding time to flesh this out & do it is why it got no further, to big a project.
To make even the story line work effectivly you have to think how it relates to MBT as in the battle progresion, next target type of battle etc IMHO. The airfield attack for instance could be a long battle starting with just a group of Special forces & some planes, arty possibly for them to call in. Can you nulify the AAA & ID safe(ish) landing zones before they enter on turn 15 or so?
The Marine landing one time is a key factor breaking through the SA defenders & meeting them as they land would probably be a lot easier than letting them get dry feet & organised.
Just makes them a bit diffrent from a standard battle adding variety, feel free to adapt any of it.