The main difference between Regimen and Regiment is that the Regimen is a Wikimedia disambiguation page and Regiment is a military unit size.
A regimen is a plan, a regulated course such as a diet, exercise or medical treatment, designed to give a positive result. A low-salt diet is a regimen. A course of penicillin is a regimen, and there are many chemotherapy regimens in the treatment of cancer.
A regiment is a military unit. Their role and size varies markedly, depending on the country and the arm of service.
In Medieval Europe, the term “regiment” denoted any large body of front-line soldiers, recruited or conscripted in one geographical area, by a leader who was often also the feudal lord of the soldiers.
By the 17th century, a full-strength regiment was usually about a thousand personnel, and was usually commanded by a colonel.
Orderly government; system of order; administration.
Any regulation or remedy which is intended to produce beneficial effects by gradual operation.
A syntactical relation between words, as when one depends on another and is regulated by it in respect to case or mood; government.
Diet; limitations on the food that one eats, for health reasons.
A unit of armed troops under the command of an officer, and consisting of several smaller units; now specifically, usually composed of two or more battalions. from 16th c.
Rule or governance over a person, place etc.; government, authority. from 14th c.
The state or office of a ruler; rulership. 14th-17th c.
Influence or control exercised by someone or something (especially a planet). 14th-17th c.
A place under a particular rule; a kingdom or domain. 14th-17th c.
A regimen. 15th-19th c.
To form soldiers into a regiment.
To systematize, or put in rigid order.