Niccolo Macchiavelli's book is only a book for the theoretical study of italian "prince" in the art of war.
There are lot of information about a beginning of military placement in XVth century.
For example in Milan Army, there are a first example of this.
The PRINCE command a CONDOTTA to a CONDOTTIERE for a precise number of forces, but they (prince) have also the
FAMIGLI forces, that are a group of relative and allies under they protection that have assigned a jurisdiction zone.
This people are supervised by a CONESTABILE that control that the money send to him for buy militar material are really spent for this.
In this kind of organization there are a militar figure of SERGENTE (from the '300 figure of SERRAGENTE), that command a group of people or a squad , the other name on SERGENTE is SQUADRERO and they are the directly subordinate of CONDOTTIERE or FAMIGLIO, more of CONDOTTIERI in the beginning are a SERGENTE or SQUADRERO.
The function of SERGENT in similar to MAN AT ARMS in the English organization.
This is a little schema from an example of italian army in the XV th siecle.
PRINCE - MASTER (Signore)
GENERAL CONDOTTIERE (Condottiero Generale) and CONESTABILE (for the financial control)
CONDOTTIERE with a minor CONDOTTA (Condottieri con condotta ridotta) or FAMIGLI (always cavalry unit)
SERGENTE or SQUADRERO
INFANTRY UNIT (barbuta) or CAVALRY UNIT (lancia)
The stick in the hand is the "BASTONE DEL COMANDO" used only by GENERAL CONDOTTIERE, is a symbol of power, i dpn't know that are anyne of this conserved in museum (in italy).
sorry for my bad english.
http://www.famaleonis.com