When it comes to the Battle for Middle-earth games, I am the maker of the Easterling faction for each one. That said, I have made extensive amounts of undeniable progress towards this end goal.
The basic resource structure for my Easterling faction, including as a Sub-faction for Mordor in Age of the Ring, shall be this: the Brewery. It provides beer, coffee, tea, and other beverages as resources based on land area. Each Brewery adds +50 to your command point limit, as well.
I have a video for the initial 62 minutes of making this structure on my YouTube channel. That guy you see standing there is a kitbash of Age of the Ring unit model parts I mixed together for the Easterling builder, or Engineer, as he's known.