Soldiers from the South East's Princess of Wales Royal Regiment have been put through their paces in a gruelling programme in the jungles of Central America.
Last night we joined them as they battled through thick foliage and sweltering heat. In our second special report from Belize, the troops have been left to fend for themselves.
That means searching for food, building shelters and starting fires. But did it all go to plan? Matt Price reports.