Help with Squad System

I'm trying to make a squad system for a WWIII so that when a commanding unit is trained, it will spawn several other units as well that will follow the commander.

As there are six players in the map, my intention was to use the six free slots for the units that follow the commanding unit so that it would be easier to select multiple squads at once.

I'm also trying to make it so that the squads, once made, can be divided into seperate fire teams (i.e. if there are 11 followers in a squad, then 6 could break off and one of those six would then become a commander and the other five would follow), and then they would be able to rejoin another squad later if necessary.
I want to also be able to assign a squad to a vehicle to make it run instead of having them automatically useable. So, if a 12 unit squad is assigned to a vehicle requiring four units to use, then four of the units would disappear and that vehicle would become active while the other 8 units are still in the infantry squad.

Any help would be appreciated.

Have you tried to do any of this yourself at all? Are you going to be using GUI or JASS? This could be a somewhat extensive venture, so....

You sir, require a system.

I borrowed a system from Sacreligious a while back. The system uses Vexorian's stuff. I really dont understand how it works (it's written in JASS), but I was able to figure out how to use it.

The map below uses the system. As I said, I dont really understand how to make a system that does what you are asking, so you'll just to have to look at the map, understand how I use the system, and then use the system yourself. It will require a bit of editing though, as I didnt really work on the map for more than a few days.