 These departments are divided into Regional Directorates for Topographic Mapping including the Northern region centred in Peshawar, Eastern region (Lahore), Western region (Quetta) and finally, the Southern region in Karachi.Responsibility for fields surveys and the maintenance/update of topographic maps are sub-divided according to these geographic areas.The Army's Geographical Institute - Instituto Geográfico do Exército - produces 1.25,000, 1