From the mid-eighteenth century , the East India Company began to maintain armies at each of its three main stations , or Presidencies of British India , at Calcutta ( Bengal ) , Madras and Bombay .
From the mid-eighteenth century , the East India Company began to keep armies at each of its three main stations , or ` Presidencies ' , in India at Calcutta ( Bengal ) , Madras and Bombay .