During the war, President Manuel L. Quezon created the City of Greater Manila as an emergency measure, merging the cities of Manila and Quezon City, along with the municipalities of Caloocan, Las Piñas, Mariquina, Pasig, Parañaque, Malabon, Navotas, San Juan del Monte, San Pedro de Macati, San Felipe Neri, Muntinlupa and the Taguig-Pateros area. Jorge Vargas was appointed as its mayor. Mayors in the cities and municipalities included in the City of Greater Manila served as vice mayors in their town. This was in order to ensure that Vargas, who was Quezon's principal lieutenant for administrative matters, would have a position of authority recognized under international military law. The City of Greater Manila was abolished by the Japanese with the formation of the Philippine Executive Commission to govern the occupied regions of the country. The City of Greater Manila served as a model for the present-day Metro Manila and the administrative functions of the Governor of Metro Manila that was established during the Marcos administration.