The booklet is designed to explain to young people whose lives may be affected by the Selective Service System the background to the standby Selective Service System as it exists today. It offers information as to the evolution and background, the purpose, and the procedures employed by Selective Service. The bulk of the booklet deals with "Why We Need the Selective Service System" and includes subsections headed: history; all-volunteer army; Selective Service System today; what the law requires; how the system works, which is further divided into: structure, registrars and advisors, classification, procedural rights, personal appearances, State appeals, national appeal board, and the future. Suggested topics of discussion or study are included. (JR)