Complex sentence: Mr. Nagarwala, DIG of the Bombay State Special Reserve Police, which had been deployed along the territory, had been sympathetic; he had himself visited the area often and advised the nationalists on the next moves.
Split into simpler sentences: Mr. Nagarwala, DIG of the Special Reserve Police, which had been deployed along the territory, had been sympathetic with the nationalists. He had himself visited the area often and advised the nationalists on the next moves.