 Their hard work and training would pay off as the Marine Company conducted its first amphibious landing on April 19, 1951 in Umiray, Quezon, and took part in battle for the first time on June 4 of the same year in Nueva Ecija against communist rebels.These and other notable battles in various parts of the country, as well as overseas deployments to Korea, led to the Navy's decision to complete the 1st Marine Battalion with the raising of B Company in 1955 and the Headquarters and Service Company also in the same year, thus the marine battalion of one HQ company and two marine rifle companies, with now LCDR Lim in charge, was finally complete.