The "Open City" concept and objective is to protect the city's historic landmarks, ancestral houses and civilian living in the city from an unnecessary battle. The City of Manila was not attack, lives were saved as well as the buildings, historical/ancestral houses, American colonial military and their government offices. It was on May 6, 1942 at 10:15 am, General Jonathan Wainwright sent the last message from Corregidor to President Roosevelt, that he surrendered to Japanese General Homma and by June 9, Allied forces had completely surrendered. Japanese military forces marched towards the City of Manila to occupy the beautiful Spanish "Pearl of the Orient" city.
"Rizal is a United States-sponsored hero who was promoted as the greatest Filipino hero during the American colonial period of the Philippines." Patuloy ang pagtataguyod sa "benevolent assimilation" at kasabay nito ay ang propaganda sa ilustradong bayaning si Rizal. Maraming ipinangalang mga paaralan, kalsada, tulay, plaza, gusaling pangpamahalaan at mga aklat na ipinasulat ayon sa kabayanihan ni Rizal, ang mga Amerikano upang makakatulong sa pagsugpo sa mga "second wave" na rebolusyonaryong tinawag nilang "tulisan" o "bandoleros" na patuloy ang pakikibakang hangad ay kalayaan sa Amerika. Patuloy din ang paglason sa murang isipan ng mga kabataang magaaral sa tinaguyod ng mga Amerikanong paaralan, aklat at pamamaraang pagtuturo sa buong Pilipinas.