Charles Ellicott Commentary 2 Kings 9:5

"And when he came, behold, the captains of the host were sitting; and he said, I have an errand to thee, O captain. And Jehu said, Unto which of us all? And he said, To thee, O captain." — 2 Kings 9:5 (ASV)

And when he came, behold. —Rather, And he went in, and look. He went into Jehu’s headquarters.

The captains of the host were sitting. —In council with Jehu.