AFPSAT AFP Knowledge — Philippine Defence History & Current AffairsStudy Notes

Before Spanish colonization, Filipino communities had established defense systems based on indigenous warfare traditions. Tribal communities used traditional weapons like bows, spears, and swords, constructing kuta (fortified settlements) for protection. The Sulu Sultanate developed maritime resistance capabilities using vintas (traditional boats). During Spanish rule, the colonial military system incorporated Filipino indios as enlisted soldiers under Spanish officers. The Spanish established key fortifications including Intramuros in Manila, Fort San Pedro in Cebu, and Fort Pilar in Zamboanga. The revolution against Spanish rule began with the formation of the Katipunan by Andres Bonifacio in 1892, leading to the Philippine Revolution starting in 1896.

The Philippine-American War (1899-1902) marked a crucial transition in Philippine military history. The war began as conventional warfare in 1899 but shifted to guerrilla tactics by 1900. Key events included the capture of President Aguinaldo in Palanan, Isabela on March 23, 1901, and the Balangiga Massacre in Samar on September 28, 1901. The war effectively ended with the Battle of Bud Bagsak in 1913. During the American period, new military institutions were established: the Philippine Constabulary in 1901 as the first organized national police-military force, and Philippine Scout units within the US Army. The National Defense Act of 1935 created the Philippine Army with General Douglas MacArthur as Field Marshal.

World War II represents the most challenging period in Philippine military history. Japanese forces invaded on December 8, 1941, leading to the heroic but ultimately unsuccessful defense of Bataan (January-April 1942) where approximately 80,000 Filipino and American troops were forced to surrender. The infamous Bataan Death March followed, forcing 75,000 prisoners of war to march 100 kilometers north with thousands dying en route. Corregidor fell on May 6, 1942, prompting MacArthur's famous declaration 'I shall return' as he escaped to Australia. During the occupation, various resistance groups emerged including the USAFFE guerrillas, the communist-led Hukbalahap in Central Luzon, and local guerrilla groups throughout the islands. MacArthur returned with the Leyte landing on October 20, 1944, beginning the liberation campaign that culminated in the devastating Battle of Manila (February 3 - March 3, 1945).

Philippine independence on July 4, 1946, marked the beginning of AFP reorganization as a national defense force. The immediate post-war period was marked by the Hukbalahap rebellion (1946-1954), a communist insurgency that was successfully defeated under President Ramon Magsaysay's leadership through a combination of military action and social reforms. The AFP's first overseas combat deployment occurred during the Korean War (1950-1953) with the 10th Battalion Combat Team (BCT). During the Vietnam War, the Philippines contributed the Philippine Civic Action Group (PHILCAG). This period saw various structural reforms and modernization efforts supported by US military assistance under the Mutual Defense Treaty signed in 1951.

President Ferdinand Marcos declared Martial Law on September 21, 1972, consolidating military power and leading to significant AFP expansion and modernization through US military assistance. The military conducted extensive counter-insurgency operations in Bicol and Mindanao against communist and Muslim separatist groups. However, growing dissatisfaction within the officer corps led to the formation of the Reform Armed Forces of the Philippines Movement (RAM) in the early 1980s. The EDSA Revolution of February 1986 marked a turning point when Defense Minister Juan Ponce Enrile and AFP Chief of Staff Fidel V. Ramos defected to the opposition, joining millions of Filipinos at EDSA. This peaceful revolution led to Marcos's exile to Hawaii and Corazon Aquino's installation as President.

The post-EDSA period was marked by political instability with at least seven coup attempts against the Aquino government between 1986 and 1989. The most serious attempt occurred in December 1989 but was ultimately suppressed by AFP loyalists. Despite these challenges, the government pursued military modernization through Republic Act 7898 (1995), the AFP Modernization Act, which provided a framework for systematic military upgrades. The period also saw persistent operations in Mindanao against the Moro National Liberation Front (MNLF), Moro Islamic Liberation Front (MILF), and emerging terrorist groups like Abu Sayyaf. Peace processes with Muslim groups showed mixed results, with agreements and breakdowns occurring throughout this period.

The new millennium brought complex security challenges requiring AFP adaptation. The death of MILF leader Salamat Hashim in 2003 initially advanced peace processes, but the 2008 Memorandum of Agreement on Ancestral Domain (MOA-AD) was struck down by the Supreme Court, causing renewed conflict. The tragic Mamasapano clash in January 2015 resulted in 44 Special Action Force (SAF) members killed, highlighting coordination issues between military and police forces. The five-month Marawi siege (May-October 2017) against ISIS-aligned Maute groups demonstrated new terrorist threats requiring urban warfare capabilities. Simultaneously, the long-running communist insurgency continued, prompting the creation of the National Task Force to End Local Communist Armed Conflict (NTF-ELCAC) under President Duterte.

The West Philippine Sea (South China Sea) has emerged as the Philippines' most pressing security challenge. The 2012 Scarborough Shoal standoff with China prompted the Philippines to file an arbitration case in 2013. The Permanent Court of Arbitration ruling on July 12, 2016, favored the Philippines on most claims, rejecting China's nine-dash line. However, China continues activities in Philippine exclusive economic zones through coast guard vessels, maritime militia, and artificial island construction. The AFP and Philippine Coast Guard have responded with increased patrols, reinforcement of bases like Pag-asa Island, and joint exercises with allies including the United States, Japan, and Australia. Recent developments include trilateral cooperation agreements and the Reciprocal Access Agreement with Japan signed in 2024.

Today's AFP consists of three major services: the Philippine Army, Philippine Navy, and Philippine Air Force, plus several unified commands and support units. Recent modernization efforts have significantly upgraded capabilities with acquisitions including BRP Jose Rizal (FF-150) and BRP Antonio Luna (FF-151) frigates, FA-50 fighter jets from South Korea, additional C-130 transport aircraft, Black Hawk utility helicopters, and AW-159 Wildcat anti-submarine helicopters. The 2024-2025 acquisition of BrahMos cruise missiles marks a significant enhancement in coastal defense capabilities. The AFP also established specialized units like the AFP Cyber Group to address modern threats including cybersecurity, disinformation, and state-sponsored cyber attacks.

The Philippines maintains several key defense relationships that enhance its security capabilities. The Mutual Defense Treaty (MDT) with the United States, signed in 1951, obligates both parties to consult and assist if attacked, forming the basis for joint exercises and shared planning. The Visiting Forces Agreement (VFA, 1998) governs the entry and conduct of US military personnel, while the Enhanced Defense Cooperation Agreement (EDCA, 2014) allows the US to use designated AFP facilities for training, equipment storage, and operations. Recent additions include the Reciprocal Access Agreement with Japan (2024) allowing mutual military deployments and expanding trilateral cooperation with the US-Japan and US-Australia partnerships for joint patrols in the West Philippine Sea.