After almost three decades of peace, Japan invaded the Philippines. HUKBALAHAP (Hukbo ng Bayan Laban sa Hapon) or People’s Anti-Japanese Army, was then established in Sitio Bawit, San Julian, Cabiao on 29 March 1942. When the Allies between the combined U.S. and Filipino troops finally liberated the Philippines and as soon as the Central Government was established in Manila, Mariano Guevarra was appointed Mayor of Cabiao. He was the chief executive of the town in 1945. Prudencio Ortiz Luis succeeded Guevarra who occupies the position for only a few months. In later part of 1945 after the liberation, most of the people of Cabiao were still in the far flung areas of Cambabalu, Saclang Capampangan, Saclang Tagalog, and Dumanas and it was during this time that the mayor of this town has been appointed by then President Manuel Roxas by the name of Ambrosio Aligada. He was appointed as the Chief Executive of the town from 1945-47.