This is a comprehensive treatment of the subject by Dick Tennant looking at the cartography of French, Portuguese and British cartographers.   Maps in the Peninsular War   

The Spanish Association of Military History (ASEHISMI) is holding its Fifth International Conference in Barcelona between 19 and 22 June 2018.   The Theme is Women at War and in the Military.   Details are on the website www.asehismi.es Contacts appear to be congreso@asehism