The battalion returned to Marine Corps Base Camp Lejeune, North Carolina after the war.

[5] In February 1944 the battalion moved to the old Civilian Conservation Corps barracks at Camp Knox which was adjacent to Montford Point.

While there, they also incorporated the men of the recently decommissioned 7th Separate Pack Howitzer Battery which provided another boost of experienced personnel.

They relieved Marines of the 1st Antiaircraft Artillery Battalion that had been stationed their since the island was secured in February 1944.

The Majuro detachment arrived at Guam on March 29 and immediately established camp near the village of Barrigada.

[11] In the summer of 1945, the battalion began preparing for deployment to Okinawa however with the mitigation of the kamikaze threat their orders were changed and they remained on Guam.

[12] Knowing they were not deploying to Okinawa had a very deleterious effect on the unit's morale as they came to view themselves as nothing more than an available pool of men for working parties.

Gilbert Johnson successfully lobbied his commanding officer to resume aggressive patrolling in order to restore unit morale.

[12] Garrison duty on Guam was also difficult because of severe racial discrimination at the hands of white Sailors and Marines.