I dunno how big COBRA would be, toy wise I'm in agreeance with Lava Boss

From a hypothetical standpoint, I'd figure COBRA has probably 40 000 full fledged soldiers globally, but the number is probably tripled in terms of supporters (be it through donations, dudes who bought into pyrimad schemes, and those who'd be willing to die for the COBRA cause)

as for Vehicles, I'm not to sure, a lot of the stuff seems designed for Mass production