"Kleinhullo" : do you mean that you have had a real DRE with fingers inserted in the rectum from 14 to 18 age at physical examinations each year at a military school ?
I am surprised because even military doctors might know that it was rather useless at that age during teenage hood.
I would have believed more that they did each time a visual inspection of the anus hole with spreading widely the cheeks which was certainly more useful to detect any issues on the skin and hemorroids.
Was it the same military doctor for the four years?
May be the military doctor was used to do
it to draftees and inductees at a former assignation which was,also rather useless
but had a little more sense according to age ? or he was a very "old school" doctor ? Or it was part of a standard medical procédure ?
If he did it, i presume that you had each year a very thorough and embarrassing exam , certainly performed in the nude for all the duration of the exam? May be with undressing naked in group ? And a long wait in the nude or walking in the nude in corridors to go to.an exam.room or to a gym ? Were the boys examined one by one or all together without privacy?
In front of whom ? A male doctor, several female nurses , sergeants , Pe teachers ?