Trevor Rinzler, 13, as Billy debates with himself whether he should join the army during the Civil War as his recruiter, Andrés de Loera-Brust, busies himself with paperwork at his desk. Andrés and fellow Harper Junior High School classmate Virginia Salomon wrote the 90-minute play, &quot;A Nation Divided,&quot; that will be presented Friday and Saturday at the school. Fred Gladdis/Enterprise photo