The Motor Boys in the Army; or, Ned, Bob and Jerry as Volunteers

Three teenage friends respond to a national declaration of war by volunteering for service; the narrative follows their transition from hometown life to army camp, covering training, uniforms, drills, and the camaraderie and rivalries that arise. They encounter suspicious characters, accusations of treachery, and internal conflicts that test loyalties, while episodes of sabotage, night alarms, cave-ins, a hand-grenade incident, storms, and daring rescues provide physical peril. The story blends action and camp routine, showing youthful resourcefulness as the characters face moral and physical challenges both in service and on the home front.