Question

How was the policy of divide and rule implemented in the Indian army?

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 ...