Revelations 9:14 -... speaks about a 200million army under the command of 4 angels of the great River Euphrates. They cause 1/3 of world population to die. Through war and pestilence/plagues at a particular time (hour, month, year.) Ezekiel 38:22 shows this is a judgment of God and it's especially going to be against territories and people who connive against the land of Israel.