DISAFFECTED youngsters will be subjected to some military-style discipline when retired army instructors are drafted in under a new pound;600,000 government scheme aimed at cutting youth crime. Former soldiers will be hired to work in schools in Manchester, Merseyside Leicester, Bristol, the West Midlands and London, following successful trials in Newcastle and Norfolk. A similar project in the United States has been credited with cutting crime and truancy by giving pupils a sense of responsibility and discipline.