The mission of the Marine Corps rifle squad is to locate, close with and destroy the enemy by fire and maneuver and/ or repel enemy assault by fire and close combat.

They remained in Japan in this capacity until they redeployed back to Marine Corps Base Camp Lejeune, North Carolina in June 1946.

The battalion was deactivated on 13 November 1947 as part of the post-war drawdown of forces.

From July to September 1958 they took part in the United States intervention in during the Lebanon crisis.

This was followed by a deployment to Guantanamo Bay Naval Base as part of the Cuban Missile Crisis from October to December 1962.