Flesh. Literally, “flesh pieces” (cf. on ch. 17:16).
Kings. The confederate nations of earth, acting in concert under the direct supervision of Satan in the guise of an angel of light (cf. on chs. 16:14, 16, 17; 17:12, 14).
Captains. The leaders in command of the military forces assembled to carry out Satan’s will in the closing scenes of the great controversy.
Mighty men. Armed forces organized, trained, and equipped.
Flesh of horses. The remainder of v. 18 is a graphic word picture of the total destruction of all the forces of evil at the second coming of Christ (cf. chs. 6:15; 14:17–20; 16:21).
Free and bond. Compare ch. 13:16.