The figure is the “sea lion” of Manila, a heraldic symbol combining a lion’s upper body with a fish’s tail. It originates from the Spanish-era coat of arms granted to Manila in 1596 and was later adopted by the U.S. Army as the Philippine Department shoulder sleeve insignia (approved in 1922). This emblem was worn by Filipino soldiers serving in the Philippine Scouts. It reflects both the islands’ maritime identity and their layered history under Spanish and American administration, making it a historically accurate symbol tied to the forces present during the early months of World War II.
 

During the Bataan campaign in 1941–1942, the sea lion emblem was associated with units serving under the Philippine Department, including Philippine Scout organizations such as the 26th Cavalry Regiment (Philippine Scouts), 43rd Infantry Regiment (Philippine Scouts), 45th Infantry Regiment (Philippine Scouts), and 57th Infantry Regiment (Philippine Scouts). In its modern form, the logo incorporates the ribbon and medal of the Philippine Defense Medal at the neck of the sea lion. This addition represents those who served in the defense of the Philippines from December 1941 to June 1942, directly connecting the historic emblem to the courage, sacrifice, and legacy of those who fought on Bataan and endured the events that followed.