When members of Britain's Armed Forces break military law, they are sent to a military detention centre, nicknamed 'The Glasshouse'. Today, the only Glasshouse is outside Colchester, housing under guard 300 men and women who have fallen of the military disciplinary system. T he maximum sentence is 2 years; most serve just a few months. The regime is said to be the toughest and strictest of any corrective training establishment. Most who go never return there. They face a relentless daily routine of military drill and kit inspections. But the system rewards those who co-operate as much as punish those who buck it.