Regiment
A Regiment is a Military Unit, made up of a number of Battalions,under the Command of a Colonel or another officer. A modern regiment can also be similar to a Brigade, in that both can be from a few hundred soldiers to 5,000 soldiers (from 3 to 7 battalions). The modern regiment's size changes in number, purpose, and role from country to country (and might not exist in some military forces) and sometimes even within the military of the same nations. In the United States Army,a Regiment has a Headquarters Company and several Companies assigned to it.