The 14th Battalion Combat Team (14th BCT), the forefather of the 14th Infantry (AVENGER) Battalion was activated in 01 August 1950 at Fort William Mckinley, Rizal with two (2) officers and sixteen (16) enlisted men initially assigned to it. The need of more troops in Laguna was urgent then that this Battalion was moved even before completing its organization. Several Philippine Constabulary (PC) absorbed and some units with excess personnel were taken and training was conducted simultaneously with operations. After the completion of the unit's training, 14th BCT was immediately thrown into the anti-dissident campaign. The unit was designed to go after the communist inspired Hukbong Bayan Laban sa Hapon (HUKBALAHAP) which at that time, the government's effort to crush the leftist had been intensified to give no respite to the enemies of the state

14TH BCT was assigned to the province of Baras, Rizal as their area of responsibility (AOR). It was while operating in the mountainous part of Rizal where the "AVENGER" name of the 14th BCT was conceived. During that time, the HARDIES, an American family, ran a dairy farm in the fertile hills of Antipolo, Rizal. They were then supplying Manila and nearby areas with their dairy products. A band of Huks in their intent to sow fear in the area mercilessly murdered the entire family. The incident was reported to the Battalion prompting the elements of "D" Company of 14th BCT under CPT CONRADO D CABAGUE to react and sweep the countryside for the perpetrators. The swift and timely reaction of the unit accounted for twenty-one (21) of said dissidents tracked down and killed in a fierce skirmish.

By their courage and tenacity, the 14BCT was given the catch name "AVENGER" by then Secretary of Defense and later President of the Republic of the Philippines, Ramon Magsaysay.

Avengers are not vengeance seekers but defenders of the weak against tyranny. Since then the Avengers was destined to avenge one's wrong another in the field.