It may interest you to know that the word "apocalypse" has actually been misused in our modern day. While the Battle of Armageddon
in Israel is a part of the apocalyptic scenario, the word "apocalypse" is actually derived from the Greek word "apokalupsis" and actually means laying bear, making naked, a disclosure of truth, instruction; and is thus applied to the Book of Revelation, because it reveals, or makes bare events which hadn't occurred yet at the time when the Book was written. Consider this verse:
"The Revelation of Jesus Christ, which God gave unto him, to shew unto his servants things which must shortly come to pass; and he sent and signified it by his angel unto his servant John:"
Revelation 1:1, KJV