I take down Liberty Prime with evil communism. My hill.
As all of yard's pineapple minions starve to death under communism, I Invade commanding the US army, which has well fed, strong, and experieced soldiers . After a couple weeks of campaigning, I take over the hill, and replace evil. Communism with Neutral Capitalism (Political Stupidity intensifies). My hill.
Pineapples only need glorious sunlight to thrive. My (still communist) hill.
I call down a meteor strike. This causes the wall the be destroyed, and thr remaining asteroides and debris to rain down on the pineapples, I take the hill useing the Meowmere. My hill.