Revelation 9:16

The "horsemen" may be humans under the control of these four evil angels (cf. Daniel 11:44), or more likely the horsemen are demons. The description of the horses (Revelation 9:17) argues for an angelic army, as does its leadership, namely, four angels (Revelation 9:14-15). Most interpreters take their number as meaning innumerable, but their number could be literal even if these are human warriors.

"Years ago Red China claimed to have an army of 200 million (cf. Time, May 21, 1965, p. 35)." [Note: Walvoord, "Revelation," p. 953.]

Many interpreters take the number 200 million as symbolic or as representing demonic forces. The combined Allied and Axis forces at their peak in World War II totaled about 70 million. [Note: The World Almanac, 1971, p. 355.] An angelic army of 200,000,000 demons is not hard to imagine. [Note: Recall J. R. R. Tolkien’s army of Orcs in The Lord of the Rings.]