New Revised Standard Version
This is the list of the people of Israel, the heads of families, the commanders of the thousands and the hundreds, and their officers who served the king in all matters concerning the divisions that came and went, month after month throughout the year, each division numbering twenty-four thousand:

Contemporary English Version
Each month a group of 24,000 men served as soldiers in Israel's army. These men, which included the family leaders, army commanders, and officials of the king, were under the command of the following men, arranged by the month of their service:

New American Bible
This is the list of the Israelite family heads, commanders of thousands and of hundreds, and other officers who served the king in all that pertained to the divisions, of twenty-four thousand men each, that came and went month by month throughout the year.

Douay-Rheims Bible
Now the children of Israel according to their number, the heads of families, captains of thousands and of hundreds, and officers, that served the king according to their companies, who came in and went out every month in the year, under every chief were four and twenty thousand.

Now the children of Israel according to their number, the heads of families, captains of thousands and of hundreds, and officers, that served the king according to their companies, who came in and went out every month in the year, under every chief were four and twenty thousand.

24,000 men, who all served a month at a time, in turn; and this was the whole of their service during the year, after which they attended to their own affairs. Thus the king had always on foot a regular force of

24,000, who served without expense to him or the state, and were not oppressed by the service, which took up only a twelfth part of their time; and by this plan he could, at any time, bring into the field

12 times

24,000 or

288,000 fighting men, independently of the

12,000 officers, which made in the whole an effective force of

300,000 soldiers; and all these men were prepared, disciplined, and ready at a call, without the smallest expense to the state or the king. These were, properly speaking, the militia of the Israelites kingdom.

captains

1 Chronicles 28:1 And David assembled all the chief men of Israel, the princes of the tribes, and the captains of the companies, who waited on the king: and the captains over thousands, and over hundreds, and them who had the charge over the substance and possessions of the king, and his sons with the officers of the court, and the men of power, and all the bravest of the army at Jerusalem.

2 Chronicles 17:12-19 And Josaphat grew, and became exceeding great: and he built in Juda houses like towers, and walled cities. . . .

2 Chronicles 26:11-13 And the army of his fighting men, that went out to war, was under the hand of Jehiel the scribe, and Maasias the doctor, and under the hand of Henanias, who was one of the king's captains. . . .

any matter

1 Kings 4:7,27 And Solomon had twelve governors over all Israel, who provided victuals for the king and for his house hold: for every one provided necessaries, each man his month in the year. . . .