This is the 8225th most frequent Russian word.
майорска
"Майорска" is not a standard Russian word; it may be a proper noun, regional term, or misspelling.
In this sentence, 'майорска' is used adjectivally to describe attire related to a major.
Майорска форма одежды подходит для официальных мероприятий.
The major's attire is suitable for official events.
Here, 'майорска' modifies 'дисциплина', indicating a high level of strictness or order associated metaphorically with a major's standards.
В школе майорска дисциплина считается образцом для подражания.
At school, major-grade discipline is considered exemplary.
'Майорска' characterizes 'службы', tying it to the rank of major.