It is a balmy Thursday evening in north-east London and a dozen teenagers in combat fatigues are practising first aid on each other inside an army cadet training centre.
“Remember, never leave a casualty alone as they might freeze to death,” an instructor reminds them as a newer group of recruits in the yard outside get to grips with marching under the watchful eye of L/Cpl Erik Hanuschi, a cadet veteran at 17.
