'put on fatiques'
In the 1970 and 80 (at least), a breach of the school rules serious enough not to be dealt with by a master on the sport would result in the perpetrator being 'sent to Mr Charles'. The punishment most frequently meted out on these occasions was to be 'put on fatigues', a term drawn from Mr Charles' military days. This involved running from the front door of the house to the front gate and back, a distance of about 1.25 kilometers. One might be ordered to complete a single journey or several or, in the worst cases, no number was given and you would run until given permission to desist. Mr Charles would watch from his study window as you returned, glancing at his watch to gauge effort and performance. Ringing any bells with anyone?