He became Superintendent of Police in 1908, Deputy Commissioner in 1913, Deputy-Inspector General (Intelligence) in 1918, and Commissioner of Calcutta Police from 1923 to 1931.
He progressed through the ranks of law enforcement, starting as Superintendent of Police in 1908, becoming Deputy Commissioner in 1913, then Deputy-Inspector General (Intelligence) in 1918, and finally, Commissioner of Calcutta Police from 1923 to 1931.