You don't recruit troops at all in Renegade.
It's first person shooter with buyable temp classes, vehicles, and your team's super weapon for taking out structures.
In multiplayer and the multiplayer 'practice' mode you are allowed to buy whatever your faction has as long as you have the credits.
You earn credits at a steady but slow pace, although your harvester can harvest Tiberium and drop it at a refinery until its destroyed.
I loved Renegade but its a shame I can't install it without it breaking.
Ahh.
Does any game exist where it's an RTS, but you can change into a unit and go FPS in the RTS battlefield?
I always wondered if there was such a thing and I realized that no developer has made this... at least successfully probably.
Probably cause it would be like combining two engines together.