The bodies thus formed constitute what are called the _Subordinate Commands_ of the Army. They are self-contained, and capable of independent existence and action--_existence_, because they have the necessary Administrative Services to supply their wants; _action_, because, having considerable strength, and a proper proportion of all Arms, they can fight for a certain time without support from other bodies of troops. In this chapter will be discussed these _Subordinate Commands_ and the _Administrative Services_ allotted to them. The succeeding chapter will describe their _Staff_ and the composition of their _Head-Quarters_. 1. THE DIVISION The _Division_ is the basis of the higher organization of Armies in the Field. It may be mainly composed of Infantry or of Cavalry. In the former case it is generally termed simply a _Division_, in the latter a _Cavalry Division_. Its Commander is generally a Major-General, and is provided with a Staff, to which the Heads of the Divisional Administrative Services are attached. Divisions are organized on the following general lines in various armies: THE INFANTRY DIVISION The _Infantry Division_ is formed of two or three Infantry Brigades--that is, of 12, 16, or 18 Battalions. The “two-Brigade” organization, the most common abroad, is inferior to that of the British Army in three Brigades, for the reasons already discussed in the first chapter. The Division is furnished with other Arms to assist the action of the Infantry, and has generally the following: _Cavalry_: 1 Regiment, or sometimes only 2 Squadrons. _Artillery_: 4 to 12 Batteries, organized in Brigades, and with the Brigades sometimes grouped in Regiments. One or other of these formations has an ammunition column. The larger number of guns is allotted when, as in Germany and England, no Army Corps Artillery exists. _Engineers_: A Field Company. _Administrative Services_: Ammunition Columns; Supply Columns; Field Ambulances; a Field Post Office. In some armies the Division has also a light Bridging Train; a Field Hospital; a mobile Remount Depôt; a Finance Office; Chaplains. The Divisional _Head-Quarters_ comprise, besides the Commander and his Staff, a number of Heads of Administrative Services, a Telegraph Company, or “Communication Unit,” Military Police, and the necessary Transport. THE CAVALRY DIVISION The _Cavalry Division_ is formed of two or three Cavalry Brigades--that is, of 16 to 24 Squadrons, in foreign armies. It has also one Brigade of Horse Artillery of 12 guns, with its ammunition column, and generally some Mounted Engineers and a Telegraph Detachment.