Zechariah 14:12, 15

And this shall be the plague with which the LORD will strike all the peoples that wage war against Jerusalem: their flesh will rot while they are still standing on their feet, their eyes will rot in their sockets, and their tongues will rot in their mouths.

And a plague like this plague shall fall on the horses, the mules, the camels, the donkeys, and whatever beasts may be in those camps.