The violence that soldiers experience in war can lead to emotional 'disturbance' in later years.
He was arrested for 'disturbance of the peace'. [=behaving in a violent or noisy way in public]
She suffered from frequent sleep 'disturbances'. [='disruptions']
(..) A little hotel near Liverpool Street. Be careful with it. Please. It's Georgian. My friend wants peace and quiet in order to work, Mrs Pope Graham. No disturbances. Her real name is just Graham. Added the Pope for a touch of class. 'Peter, did you get the keys to Control's flat? ' (..)2011 Tinker Tailor Soldier Spy