In Bengal, counter-intelligence, especially against the activities of Jugantar was led by Charles Tegart while the role of German or Baltic-German double-agents, especially the agent named Oren, was also important in infiltrating and preempting the plans for Autumn rebellions in Bengal in 1915 as well as scuttling Bagha Jatin's plans in winter that year.
Charles Tegart, KCIE, KPM (1881–1946), colonial police officer in India and Mandatory Palestine
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Sir Charles Tegart designed the forts in 1938 based on his experiences in the Indian insurgency.