You won the lottery, discovered you're the sole heir to a rich uncle you never heard of, whatever. You now have a billion dollars at your disposal. You have all the appropriate licenses to build a mercenary army, acquire automatic weapons, vehicles, explosives, etc., but only what would realistically be on the market.
Your task is to recruit an army and retake Rhodesia. How do you equip your army within your budget, and once you successfully invade the country and overthrow its government, how do you attract white settlers to live there and rebuild Rhodesia to its former glory?