Disciplinarian

a.	1.	Pertaining to discipline.
n.	1.	One who disciplines; one who excels in training, especially with training, especially with regard to order and obedience; one who enforces rigid discipline; a stickler for the observance of rules and methods of training; as, he is a better disciplinarian than scholar.
	2.	A Puritan or Presbyterian; - because of rigid adherence to religious or church discipline.

Noun

1.

disciplinarian - someone who demands exact conformity to rules and forms Synonyms: martinet, moralist

Simon Legree, absolute monarch, absolute ruler, all-powerful ruler, arrogator, autarch, autocrat, caesar, commissar, czar, despot, dictator, driver, duce, hard master, martinet, oligarch, oppressor, pharaoh, slave driver, stickler, taskmaster, tyrant, usurper, warlord