British officers of the 32nd Pioneers in Afghanistan with Sikh and Indian soldiers, 1880
British officers of the 32nd Pioneers relaxing in Afghanistan, while Sikh and other Indian servants and soldiers are made to stand in the background, 1880. Photograph, 2nd Afghan War (1878-1880), 1880 (c). National Army Museum. Source
Indian soldiers including Sikhs boarding a train to Peshawar, 1878
Indian Soldiers, including Sikhs, boarding a train to Peshawar on their way to Afghanistan to fight in the Second Anglo-Afghan War for their British masters. Painting by Walter Charles Horsley, made in 1878.
Sikh orderly serving General Roberts during the Battle of Kandahar, 1880
A loyal and obedient Sikh orderly serving as a human shield for his British master, General Roberts, protecting him from bullets during the Battle of Kandahar in Afghanistan on 1st September 1880. Source. The 'Orderly', though enlisted as a soldier in the British-Indian Army, served as a servant or attendant to the officer.

General Frederick Roberts wrote about his Sikh orderlies: "My orderlies...displayed such touching devotion that it is with feelings of the most profound admiration and gratitude I call to mind their self-sacrificing courage. On this occasion (as on many others) they kept close round me, determined that no shot should reach me; and on my being hit in the hand by a spent bullet, and turning to look round in the direction it came from, I beheld one of the Sikhs standing with his arms stretched out trying to screen me from the enemy, which he could easily do, for he was a grand specimen of a man, a head and shoulders taller than myself." Source