Rank of the Officers commanding the above Formations
| Companies, Squadrons, Batteries | Captain. |
| (The Infantry Captain is a mounted Officer, except in Japan.) | |
| Infantry Battalions, and Artillery “Groups” | Major. |
| Regiments, of all Arms | Colonel. |
| Brigades, of all Arms | Major-General. |
| Divisions and Army Corps | Lieut.-General. |
In Russia the Lieutenant-Colonel replaces the Major, as that rank does not exist.
The following tables give the war organization of the formations of fighting troops in the principal armies of the world.