Early in the First World War, British and Indian forces set up the East Persia Cordon with Seistan Force assembled from the Indian Army. The force was created to counter German, Austrian and Ottoman subversion in Afghanistan and the North West Frontier of British India.
At the beginning of the First World War, British and Indian troops created the East Persian Barrier with the Seistan Force drawn from the Indian Army. This unit was established to thwart German, Austrian, and Ottoman subversive activities in Afghanistan and the Northwest Frontier of British India.