In School and Out by Oliver Optic

The next morning Richard was discharged from guard duty, and returned to the battalion. From the moment he opened his eyes he carefully observed the actions of his companions, and even studied the glances which were bestowed upon him. All his watching seemed to be in vain, for he could not obtain a particle of information that would aid him in solving the mystery of the Regulators.

Among the boys there were several with whom he had become quite intimate, particularly Bailey, who occupied the next bed to his in Barrack B. So eager was he to fathom the mystery, that he was tempted to make some inquiries of them; but they might themselves be members of the Regulators. Even Bailey might belong to the potent organization, and he did not care to expose himself in the slightest degree to their jeers or their malice. Though, as he had been informed, there were fifty boys who had become his enemies, and who were pledged to annoy him to the utmost of their ability, every one seemed to be his friend.