The war powers act makes it lawful for a president to take military action against any country, provided Congress is notified within 48 hours of that action. Then a president gets 60 days + 30 "withdrawal" to wage any war they want without congressional approval. Furthermore it's been ruled violations are basically irrelevant if troops are gone before the matter gets to the supreme court.
Clinton and Obama both violated this law with 0 consequences. Trump might also violate the law, but we won't know for 90 days.
No you can't really do it. The government isn't going to allow you to divide a plot into that many tiny ones. What you could do is have a company buy the land and sell lifetime leases for small parts.