Gents,
I will do what I can to clear up the initial questions. Please feel free to contact me here if you have any other questions.
The word "hierarchy" is used, rather than "units" because you can control "Units" at many different levels in ATF.
- Vehicles and Teams: These are the building blocks that make up platoons and companies ("hierarchies"). By controlling these, you are micro-managing the actions of the individual tanks and fire teams.
- Platoons: Usually around 4 - 12 vehicles and/or teams. They can be given formations and simple missions, rather than just orders and SOPs (standard operating procedures).
- Companies: A mixture of platoons and vehicles/teams. They also can be given formations and orders.
We use the term "hierarchies" to describe both "platoons and companies" because it is a little less verbose when you have to say it for the 1000th time
The control of platoons and companies is identical, though companies, being more robust organizations, can execute much more complex missions.
The best advice I can give you is to not feel you have to understand the every facet game before you begin playing. The friendly AI is suprisingly intelligent and will do pretty sensible things. Just tell your platoons and companies ("hierarchies") where to go and what missions to execute. Everything else is really just customizing their behavior.