The war that will end all wars. Weapon(s) God could use during Armageddon: Pestilence, Earthquake, Fire, Hail, or Tornado.
Armageddon (means Mountain of Meggido) is the Hebrew name of a place where God will war against man. Armageddon cannot refer to the literal area near ancient Megiddo. Why? Because there is no large mountain there, and even the entire adjoining Low Plain of Jezreel could not contain all those who will fight against God. Instead, Armageddon is the worldwide situation in which the nations assemble in their last stand against rule by God.
Keep on the Watch! Prove yourselves ready, so that day will not come upon you like a thief in the night.
https://www.jw.org/en/