March 28–April 3 – Coinciding with the anniversary of the 1942 establishment of the Hukbalahap on March 29, guerrillas under the said communist movement being renamed Hukbong Mapagpalaya ng Bayan (still commonly known as Huks) begin raids throughout Luzon.[2][3] In the first three days, the Huks attack ten municipalities, particularly in Rizal, Laguna and Pampanga.[2][4] Until April 1, they would kill 44 individuals[3] including 35 from the government side,[2] and capture a mayor and 12 policemen.[2] Overall, two towns are burned and up to $1.5 million properties are looted.[2] In early April, following a government order for the suppression of the Huks, the latter also raid San Clemente, Aparri and Santa Rosa.[2]
April 7 (Good Friday) – Constabulary troops and special policemen kill 50–100 civilians and burn 130 houses in a raid in Bacolor, Pampanga.[2][6] The incident, which would only be reported later to the Senate by Pablo Angeles David, is in revenge for the April 4 assassination of Pampanga special police chief by the Huks.[7][8]
April 14 – The Philippine Air Force pilots attack 27 small boats aboard a massive number of Huk guerrillas, crossing the Chico River at the northern Candaba Swamp near the Pampanga–Nueva Ecija provincial boundary. Authorities estimate that 80% of the rebels—probably 320—are killed in what might be the deadliest single encounter in the Huk conflict.[7]
August 25–26 – Huk forces conduct simultaneous offensives throughout Luzon, with hundreds of members raiding eleven municipalities in five provinces and killing 150 people.[11]
About 200 Huks conduct an evening raid of Tarlac, Tarlac,[4][11] release prisoners,[a][4] burn several buildings, and attack Camp Macabulos.[11] In the said military camp, a separate band with two squadrons kills 13 army personnel, 9 civilians, and a Red Cross nurse; loots and burns all facilities.[4][12] The attack causes a fighting until the next day;[13] additional fatalities are reported.[b]
On August 26, about 300–400 Huks launch an early morning raid of Santa Cruz, Laguna,[4][6] loot the provincial capitol and even burn buildings, release 20 prisoners and kidnap 9 guards from the provincial jail,[4] and kill at least seven[11]—including three policemen;[6][c] a battle ensues as Huks destroy two bridges in neighboring towns.[11]
October 18 – Combined forces of the Military Intelligence Service and the Manila Police Department launch 22 simultaneous raids, resulting to the capture of the entire Huk Politburo in the city.[14][6]
October 22 – President Quirino issues Proclamation No. 210, suspending the writ of habeas corpus[12] until the end of the anti-Huk campaign, allowing the detention of captured guerrillas for more than a day regardless of presence of any evidence.[6] This will be affirmed by a trial court through a November 1 order.[12]
December 15 – An agrarian program in the Commonwealth era is reestablished by defense secretary Magsaysay as the Economic Development Corps, a civil resettlement project providing settlements in Mindanao mainly for the Huks, beginning efforts for ending the military campaign against the insurgents.[14][6]
As per Act No. 2711 section 29,[16] issued on March 10, 1917, any legal holiday of fixed date falls on Sunday, the next succeeding day shall be observed as legal holiday. Sundays are also considered legal religious holidays. Bonifacio Day was added through Philippine Legislature Act No. 2946. It was signed by then-Governor General Francis Burton Harrison in 1921.[17] On October 28, 1931, the Act No. 3827 was approved declaring the last Sunday of August as National Heroes Day.[18]
April 25 – Apollo C. Quiboloy, founder and leader of the Philippines-based Restorationist church, the Kingdom of Jesus Christ, The Name Above Every Name, Inc.