In April 1943, the unit was redesignated as the 972nd Signal Service Company and on January 8, 1944, was reorganized as a battalion and designated as the 972nd Signal Service Battalion. Its strength then stood at 643 personnel. By this time, the unit was reassigned to the U.S. Army Forces, Central Pacific Area. The expanding offensive in the Pacific and the consequent growth in signal requirements demanded a reallocation of theater signal resources. The 972nd Signal Service Battalion became the "wire battalion." Its mission was to furnish personnel capable of handling the installation and maintenance of communications for the Wire Division of the Signal Office, Central Pacific Area. Though major elements of the battalion were employed on the Island of Oahu, detachments were set up on the Islands of Hawaii, Maui and Kauai.

The Central Pacific Base Command awarded the 972nd Signal Service Battalion the Meritorious Service Unit Plaque (later renamed the Meritorious Unit Commendation), for superior performance of exceptionally difficult tasks for the period March 1, 1945, to April 30, 1945. The battalion also earned the Central Pacific campaign streamer for the period 1941-1943. The battalion’s Signal Photographic Detachment was awarded the Eastern Mandates campaign streamer as well.