Philippine Declaration of Independence
Following the end of World War II, the United States granted independence to the Philippines on 4 July 1946 via the Treaty of Manila. July 4 was observed in the Philippines as "Independence Day" until August 4, 1964 when, upon the advice of historians and the urging of nationalists, President Diosdado Macapagal signed into law Republic Act No. 4166 designating June 12 as the country's "Independence Day". June 12 had previously been observed as "Flag Day" and many government buildings are urged to display the Philippine Flag in their offices.
Emilio S. Liwanag
After the war, he was promoted to the rank of an USAFFE captain on March 11, 1946. The USAFFE was disbanded as the Philippines won its independence from the United States on June 30, 1946. In July 1946, Liwanag returned to his old unit, which changed into the newly formed Philippine Naval Patrol and was reactivated to the promoted naval rank as a lieutenant commander. The President of the Philippines Manuel Roxas strengthened the Offshore Patrol after issuing Executive Order No. 94 on October 5, 1947. This order officially elevated the patrol to a major command that was equal to the other branches of the armed forces, which is now the Philippine Navy. The OSP was renamed the Philippine Naval Patrol (PNP), later on it changed into the Philippine Navy on January 5, 1951. Liwanag and fellow surviving OSP officers became the early pioneers that helped shaped the structure of the Philippine Navy.