Future Of War (Hovering Tanks)

This Mod is made for my Hover Forts Modification. Story about the map (the maker of the enviroment mod wanted it): 2026 Aliens came to our planet, in peace. America accidentally shot a nuclear warhead at their mothership and the Aliens decleared war to the whole planet. The Aliens attacked us with some kind of giant crytals which had grown nearly over the whole planet, it was highly radioactive and something completely else than anyone had ever seen. At the point where only half of all humans were alive in 2031 a group of 7 scientists were able to make use of that. They found out that they could use it to make things hover, making barriers of pure energy and weapons, weapons to defeat the Aliens. After a long war in 2042 humans were able to win, the aliens were gone because they were flying back to the place where they came from. But the worst part was after they won. The Earth had no giant oceans anymore, they became around 75% smaller, and everyone talked about if they should keep the new resource called "Xenonium" or remove it from their planet, and loose all the new technology but also get back all the places where it was growing. The world was split into 2 factions, the IDA (International Defense Army) which wanted to remove the Xenonium and the Kerlat which wanted to keep it. 2043, a war started, that was much worse than the war against the Aliens ever could have been. The borders of the countries that existed once were forgotten, and the most of the Kerlat were in south africa and north asia and parts of europe and south america, while the most of the IDA were in north america, southeast asia and australia, the world was very different from everything people knew before the Aliens came. The most of the worls was a wasteland, with Xenonium. The sky was not really blue anymore, it was grey because of the war and got slowly filled with the gas which got released into the world when humans made Xenonium into useful things. it was called "Xenonium gas", Xenonium g