The long-term plan for control of the district entailed building metalled roads along the lines of communication to a new central base to be established at Razmak. In 1921 work began on the southern road up the Tank Zam from Jandola, under the protection of the Waziristan Force. The following year work on the northern road from the Tochi began at Idak, shielded by the "Razmak Force" advancing to its objective. The two roads met in 1924, linking North and South Waziristan, and enabling the Indian Army to reorganise both areas as one military district. The Waziristan and Razmak Field Forces then devolved into brigades based permanently at Manzai, Razmak, Gardai, and Bannu.