The main differences are as follows:
The Infantry Brigade, which has 4 Battalions as in the Home Army, is organized for independent action, having its own Administrative Services—namely: two Ambulances, a Supply Column, and a Field Post Office.
The Cavalry Brigade, like that of the Home Army, is of 3 Regiments, but the Regiment has 4 Squadrons. The Brigade is also organized for independent action, having a Horse Artillery Battery and Ammunition Column, and the necessary Administrative Services, like the Infantry Brigade.
The Division is of three Brigades, with two Field Companies of Engineers, like the British Division, but it has an extra Battalion of Pioneers and a whole Cavalry Regiment. It is weaker in Artillery, having only one Brigade of Field Artillery, but it has 2 Mountain Batteries. The Indian Division has the same Administrative Services as a British Division in England, with a Survey Party in addition.
The Staff and the Field and Horse Artillery are British. The Infantry Battalions, Cavalry Regiments, and Mountain Batteries are either British or Indian. The Engineer Companies and Administrative Services are Indian. In all Indian Units the higher ranks are filled by British Officers.
The following gives the Establishment of Brigades and Divisions:
Indian Army Organization
Cavalry Brigade
Battery Horse Artillery.
Cavalry Regiments, 1 British and 2 Indian.
Ammunition Column.
Field Hospital, 1 Section British, 2 Sections Indian.
Field Post Office.
Brigade Supply Column.
Total Strength: British: 70 Officers, 650 men.
” ” Indian: 40 Officers, 1,100 men, 1,950 horses.