Shield
Gules, on a bend Or between two fountains a dragon sans wings statant Azure.
Crest
From a wreath Argent and Gules, a tower triple-towered Or entrance coulisse Azure, behind a boomerang point up of the last.
Motto
Honor and Achievement.
Shield
The design of the shield refers to the Battalions participation in three campaigns in the Pacific Theater during World War II. The dragon stands for the dragon-shaped island of New Guinea. The roundels with wavy blue and white bands represent the Pacific Ocean; they are two in number to the campaigns of Leyte and Luzon.
Crest
The crest commemorates the action for which the Battalion was awarded the Philippine Presidential Unit Citation: i.e., participation in the assault landing which liberated the Philippine Islands. The tower is from the arms of the City of Manila, capital of the Islands; it also alludes to the units construction function. The boomerang, a weapon used in the South Pacific area, refers to the victorious return of American Forces.
The coat of arms was approved on 20 October 1966.