Bible Verses About Armies: Enumeration of Israel's military forces

Take ye the sum of all the congregation of the children of Israel, after their families, by the house of their fathers, with the number of their names, every male by their polls;

From twenty years old and upward, all that are able to go forth to war in Israel: thou and Aaron shall number them by their armies.

¶ And David numbered the people that were with him, and set captains of thousands and captains of hundreds over them.

And David sent forth a third part of the people under the hand of Joab, and a third part under the hand of Abishai the son of Zeruiah, Joab's brother, and a third part under the hand of Ittai the Gittite. And the king said unto the people, I will surely go forth with you myself also.

¶ And again the anger of the LORD was kindled against Israel, and he moved David against them to say, Go, number Israel and Judah.

For the king said to Joab the captain of the host, which was with him, Go now through all the tribes of Israel, from Dan even to Beersheba, and number ye the people, that I may know the number of the people.

And Joab said unto the king, Now the LORD thy God add unto the people, how many soever they be, an hundredfold, and that the eyes of my lord the king may see it: but why doth my lord the king delight in this thing?

Notwithstanding the king's word prevailed against Joab, and against the captains of the host. And Joab and the captains of the host went out from the presence of the king, to number the people of Israel.

And they passed over Jordan, and pitched in Aroer, on the right side of the city that lieth in the midst of the river of Gad, and toward Jazer:

Then they came to Gilead, and to the land of Tahtimhodshi; and they came to Danjaan, and about to Zidon,

And came to the strong hold of Tyre, and to all the cities of the Hivites, and of the Canaanites: and they went out to the south of Judah, even to Beersheba.

So when they had gone through all the land, they came to Jerusalem at the end of nine months and twenty days.

And Joab gave up the sum of the number of the people unto the king: and there were in Israel eight hundred thousand valiant men that drew the sword; and the men of Judah were five hundred thousand men.