2 Chronicles 25:5

Then Amaziah got all Judah together and put them in order by their families, even all Judah and Benjamin, under captains of thousands and captains of hundreds: and he had those of twenty years old and over numbered, and they came to three hundred thousand of the best fighting-men, trained for war and in the use of the spear and the body-cover.

Numbers 1:3

All those of twenty years old and over, who are able to go to war in Israel, are to be numbered by you and Aaron.

2 Chronicles 17:14-18

This is the number of them, listed by their families, the captains of thousands of Judah: Adnah, the captain, and with him three hundred thousand men of war;

2 Chronicles 11:1

And Rehoboam came to Jerusalem, and got together the men of Judah and Benjamin, a hundred and eighty thousand of his best fighting-men, to make war against Israel and get the kingdom back for Rehoboam.

Exodus 18:25

And he made selection of able men out of all Israel, and made them heads over the people, captains of thousands, captains of hundreds and of fifties and of tens.

1 Samuel 8:12

And he will make them captains of thousands and of fifties; some he will put to work ploughing and cutting his grain and making his instruments of war and building his war-carriages.

1 Chronicles 13:1

Then David had discussions with the captains of thousands and the captains of hundreds and with every chief.

1 Chronicles 27:1

Now the number of the children of Israel, that is, the heads of families, and the captains of thousands and of hundreds, and the men in authority who were servants of the king in anything to do with the divisions which came in and went out month by month through all the months of the year, in every division were twenty-four thousand.

2 Chronicles 14:8

And Asa had an army of three hundred thousand men of Judah armed with body-covers and spears, and two hundred and eighty thousand of Benjamin armed with body-covers and bows; all these were men of war.

2 Chronicles 26:13

And under their orders was a trained army of three hundred and seven thousand, five hundred, of great strength in war, helping the king against any who came against him.

Treasury of Scripture Knowledge

Summary

Moreover Amaziah gathered Judah together, and made them captains over thousands, and captains over hundreds, according to the houses of their fathers, throughout all Judah and Benjamin: and he numbered them from twenty years old and above, and found them three hundred thousand choice men, able to go forth to war, that could handle spear and shield.

From twenty

Bible References

Captains over thousands

Exodus 18:25
And he made selection of able men out of all Israel, and made them heads over the people, captains of thousands, captains of hundreds and of fifties and of tens.
1 Samuel 8:12
And he will make them captains of thousands and of fifties; some he will put to work ploughing and cutting his grain and making his instruments of war and building his war-carriages.
1 Chronicles 13:1
Then David had discussions with the captains of thousands and the captains of hundreds and with every chief.
1 Chronicles 27:1
Now the number of the children of Israel, that is, the heads of families, and the captains of thousands and of hundreds, and the men in authority who were servants of the king in anything to do with the divisions which came in and went out month by month through all the months of the year, in every division were twenty-four thousand.

From twenty

Numbers 1:3
All those of twenty years old and over, who are able to go to war in Israel, are to be numbered by you and Aaron.

Three

2 Chronicles 11:1
And Rehoboam came to Jerusalem, and got together the men of Judah and Benjamin, a hundred and eighty thousand of his best fighting-men, to make war against Israel and get the kingdom back for Rehoboam.
2 Chronicles 14:8
And Asa had an army of three hundred thousand men of Judah armed with body-covers and spears, and two hundred and eighty thousand of Benjamin armed with body-covers and bows; all these were men of war.
2 Chronicles 17:14
This is the number of them, listed by their families, the captains of thousands of Judah: Adnah, the captain, and with him three hundred thousand men of war;

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain