Question

HOW WAS THE POLICY OF DIVIDE AND RULE IMPLEMENTED IN THE INDIAN ARMY AFTER THE REVOLT OF 1857

Answer 1

There are many ways we can witness this implementation 

By having loyal minority groups form the Army, Britain ensured that the majority doesn't influence the army.
Separate electorates were imposed after this revolt
Partition of bengal is the biggest example of this divide and rule 

Answer 2

they followed the policy of deliberate discrimination against the Muslim community hands for the British proceeded the policy of divide and rule to prevent the Indians from uniting remove all the prospects of Revolt the army was reorganize so as to keep it well under British control the proportion of European soldiers to the Indian soldiers were increased. strategic military positions and crucial military equipments such as are truly was placed excessively in the charge of European soldiers and officers.the British begin to recreate fewer soldiers from awadh, Bihar, Madras and other areas where their head revolves in or before 1857 they recruited more soldiers from among the sikhs Gurkhas Pathans Rajput and Jats who had remained neutral or had held the British during the revolt.although the revolt failed it marked the beginning of a broader struggle against British rule.