He served his mandatory military service with the Army 's Infantry Training Centre at Evjemoen in Aust - Agder .
Stoltenberg attended primary school at Oslo Waldorf School , and upper secondary school at Oslo Cathedral School .
Stoltenberg served Stoltenberg 's mandatory military service with the Army 's Infantry Training Centre at Evjemoen in Aust - Agder .
Stoltenberg attended primary school at Oslo Waldorf School , and upper secondary school at Oslo Cathedral School .