Men from various units supplied by the various Princely States in 1914.

There were over 550 princely states in India who had not been conquered or annexed by the British and while technically independent all the states had British "advisers" who ensured they followed the Indian governments wishes.

The Imperial Service Troops were forces raised by the princely states of the British Indian Empire. These troops were available for service alongside the Indian Army when such service was requested by the British government. At the beginning of the 20th century, their total numbers were about 18,000 men.

On the eve of war in 1914, twenty-nine Indian states were providing soldiers for the Imperial Service Troops scheme. These totalled 22,479 of whom 7,673 were cavalry, 10,298 infantry and 2,723 transport corps.

The London Illustrated News September 1914.