The friend was being merged into the commander.
They chose a tent in order to shut out the noise and make sleep possible, but on their way to it they were waylaid by Langdon, who had heard something of their adventure the night before, and who felt chagrin because he had lacked a part in it.
"Although everything generally happens for the best, there is a slip sometimes," he said, "and I want to be in on the next move, whatever it is.

There is a rumor that the Invincibles are to march.

You have been before the colonel, and you ought to know.

Is it true ?" "It is," replied Harry, "but that's all we do know.

He was pretty sharp with us, Tom, and among our three selves, we are not going to get any favors from Colonel Leonidas Talbot and Lieutenant-Colonel Hector St.Hilaire because we're friends of theirs and would be likely to meet in the same drawing-rooms, if there were no war." Harry and St.Clair slept well, despite the noises of a camp, but they were ready at the appointed time, very precise in their new uniforms.
Langdon was with them and the three were eager for the movement, the nature of which officers alone seemed to know.
The Invincibles were an infantry regiment and the three youths, like the men, were on foot.