Charles Ellicott Commentary 2 Kings 11:9

"And the captains over hundreds did according to all that Jehoiada the priest commanded; and they took every man his men, those that were to come in on the sabbath, with those that were to go out on the sabbath, and came to Jehoiada the priest." — 2 Kings 11:9 (ASV)

The captains over the hundreds — that is, the centurions of the royal guard (2 Kings 11:4). This is also the case in 2 Kings 11:10.

Commanded. — Had commanded.