Bible Verses About Armies: Composed of mercenaries

And when the children of Ammon saw that they had made themselves odious to David, Hanun and the children of Ammon sent a thousand talents of silver to hire them chariots and horsemen out of Mesopotamia, and out of Aram-maacah, and out of Zobah.

So they hired them thirty and two thousand chariots, and the king of Maacah and his people, who came and encamped before Medeba. And the children of Ammon gathered themselves together from their cities, and came to battle.

Moreover Amaziah gathered Judah together, and ordered them according to their fathers’ houses, under captains of thousands and captains of hundreds, even all Judah and Benjamin: and he numbered them from twenty years old and upward, and found them three hundred thousand chosen men, able to go forth to war, that could handle spear and shield.

He hired also a hundred thousand mighty men of valor out of Israel for a hundred talents of silver.